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File consists of an illustration by Ian Sheldon of the butterfly, Thorybes pylades, or also known as the Northern cloudywing.

File consists of an illustration of the butterfly, Pygrus ruralis.

File consists of an illustration of the butterfly Carterocephalus palaemon mandan, also known as Arctic Skipper.

File consists of an illustration of the butterfly Oarisma garita, also known as Garita Skipper.

File consists of an illustration of the butterfly Thymelicus lineola, also known as European Skipper.

File consists of an illustration of the butterfly Hesperia colorado, also known as a Western Branded Skipper.

File consists of an illustration of the butterfly Hesperia juba, also known as a Juba Skipper.

File consists of an illustration by Ian Sheldon of the butterfly Achalarus lyciades. Handwritten note on back of the illustration reads, "Ottawa National Collection Martin's Farm Virginia 28 v. 38."

File consists of an illustration by Ian Sheldon of the butterfly Erynnis juvenalis. Note on the back reads,"Ottawa National Collection, Constantine Bay ON May 15, 82 [?] Ian Jones."

File consists of an illustration of the butterfly Ancyloxphya numitor. Note on the back of the illustration reads, " Ottawa National Collection, [Bob Caygeon?] ON 24. VI. 31 [McD?] x-ref [?]."

File consists of an illustration of the butterfly Hesperia comma laurentiana. Note on back of the illustration reads, "No museum specimen visual references from Butterflies of Canada Layberry et al H. Comma laurentina, Parrsboro NS p. 38."

Item consists of an illustration of the butterfly Hesperia leonardus. Note on the back of the illustration reads, "Ottawa National Collection, Jamesburg NJ, 4.iX.31."

File consists of an illustration of the butterfly Polites peckius. Note on the back of the illustration reads, "Visual refs only. Primary resource Butterflies of Canada."

File consists of an illustration of the butterfly Lerema accius.

File consists of an illustration of the butterfly Poanes zabulon.

File consists of an illustration by Ian Sheldon of the butterfly Ancyloxphya numitor. Handwritten note on the back of the illustration reads, "Ottawa national Collection Bobcaygeon ON 24.VI-31[J.McDummough?]."

File consists of an illustration by Ian Sheldon of the butterfly Hesperia leonardus. Handwritten note on the back of the illustration reads, "Ottawa National Collection 1 mi SE Ramsy Lake Gatineau PK, QB 23.VIII.81 Layberry [?] Databased for Butterflies of Canada Project."

File consists of an illustration by Ian Sheldon of the butterfly Poanes massasoit. Handwritten note on the back of the illustration.

File consists of an illustration by Ian Sheldon of the butterfly Poanes viator. Handwritten note on the back of the illustration.

File consists of an illustration by Ian Sheldon of the butterfly Euphyes dukesi. Handwritten note on the back of the illustration.

File consists of an illustration by Ian Sheldon of the butterfly Euphyes conspicua. Handwritten note on the back of the illustration.

File consists of an illustration by Ian Sheldon of the butterfly Atrytonopsis hiamia. Handwritten note on the back of the illustration.

File consists of an illustration by Ian Sheldon of the butterfly Amblyscirtes hegon. Handwritten note on the back of the illustration.

File consists of an illustration by Ian Sheldon of the butterfly Polites sonora. Handwritten note on the back of the illustration reads, "as ventral."

File consists of an illustration by Ian Sheldon of the butterfly amblyscirtes vialis. Handwritten note on the back of the illustration reads, "JHA Coll' as ventral."

File consists of an illustration by Ian Sheldon of the butterfly Amblyscirtes vialis. Handwritten note on the back of the illustration reads, "A. vialis JHA [?] Bow Isalnd 16.V.[?] [and] JHA Coll' S. of Devon 11.VI.99."

File consists of an illustration by Ian Sheldon of the butterfly Wallangrenia egeremet. Handwritten note on the back of the illustration reads, "Ottawa National Collection Grand Bend ON 23.VII.39 TN Freeman Databased for the Butterflies of Canada Project 98-99."

File consists of an illustration by Ian Sheldon of the butterfly Anatrytone logan. Handwritten notes on the back of the illustration.

File consists of an illustration by Ian Sheldon of the butterfly Poanes massassoit. Handwritten note on the back of the illustration reads, "Ottawa National Collection Jamesberg N.J. 16.VII.32 x-ref for colour patters with Butterflies of Canada (Layberry et. al.)."

File consists of an illustration by Ian Sheldon of the butterfly Poanes hobomok. Handwritten note on the back of the illustration reads, "Ottawa National Collection Gracefield Que. 10.VII.37." F.A. [?] Databased for the Butterflies of Canada Project 98-99."

File consists of an illustration by Ian Sheldon of the butterfly Euphyes dion. Handwritten note on the back of the illustration reads, "Ottawa National Collection Stoney Point Tilbury N. T wp Essex C. July 6 1980 Databased for the Butterflies of Canada Project 98-99."

File consists of an illustration of the butterfly Pontia occidentalis, also known as Western White . Illustration can be found on page 65 of the book Butterflies of British Columbia.

File consists of an illustration of the butterfly Pontia protodice, also known as Checkered White. Illustration can be found on page 67 of the book Butterflies of British Columbia.

File consists of an illustration of the butterfly Pontia beckerii, also known as Becker's White. Illustration can be found on page 68 of the book Butterflies of British Columbia.

File consists of an illustration of the butterfly Pieris oleracea, also known as Viened White. Illustration can be found on page 72 of the book Butterflies of British Columbia.

File consists of an illustration of the butterfly Pieris angelika, also known as Arctic White. Illustration can be found on page 74 of the book Butterflies of British Columbia.

File consists of an illustration of the butterfly Pieris rapae, also known as Cabbage White. Illustration can be found on page 76 of the book Butterflies of British Columbia.

File consists of an illustration of the butterfly Euchloe creusa, also known as Northern Marble. Illustration can be found on page 79 of the book Butterflies of British Columbia by John Acorn and Ian Sheldon. Note on the back of the illustration reads, "Dave Lawrie, Plateau Mtn. Kananaskis Alberta 8 vn. 90 #90-07-08-03."

File consists of an illustration of the butterfly Pieris virginiensis. Note on the back of the illustration reads, " 10 May ' 60 Oak Ridge TN R. Clayton Stickland? modified with ref of Butt of Canada to make it more northern."

File consists of an illustration of the butterfly Euchloe olympia. Note on the back of the illustration reads, "JHA Coll" Canada AB Jenner Badlands April 29, 2006 JHA Coll"."

File consists of an illustration of the butterfly Colias cesonia. Note on the back of the illustration reads, "ref: same as dorsal."

File consists of an illustration of the butterfly Phoebis sennae. Note on the back of the illustration reads, "Georgia McIntosh Co. Meridian [K-?] Island [?] JA Hyatt date unreadable Strickland?"

File consists of an illustration of the butterfly Phoebis philea. Handwritten note on the back of the illustration reads, "Phoebis philea [male] Orange Pk, Flordia 8 Nov. '69 LJ [Milton?] Strickland."

File consists of an illustration of the butterfly Abaeis nicippe. Handwritten note on the back of the illustration reads, "as dorsal."

File consists of an illustration of the butterfly Nathalis iole. Handwritten note on the back of the illustration reads, "JHA Coll" USA CA San Bernadino Co. San Bernadino Mtns. Seven Oaks 18 July 91 [?] det [?]."

File consists of an illustration of the butterfly Nathalis iole. Handwritten note on the back of the illustration reads, "as dorsal."

File consists of an illustration by Ian Sheldon of the butterfly Anthocharis sara, also known as Sara Orangetip. Handwritten note on the back of the illustration reads, "D. Lawrie Whistler Mtn. AB Mines Lake May 23, 99 el. 5000 #99-05-23-01."

File consists of an illustration by Ian Sheldon of the butterfly Anthocharis sara , also known as SaraOrangetip. Handwritten note on the back of the illustration reads, "D. Lawrie Whistler Mtn. Mines Lake AB 24.V.9 5000 #99-05-24-01."

File consists of an illustration by Ian Sheldon of the butterfly Anthocharis stella, also known as a Stella Orangetip. Handwritten note on the back of the illustration reads, "Anthocharis stella [male] Castle River [at] Windsor Mtn. 8 km ST. of Beaver Mines Lake AB 31.V.01 Lawrie [?] USA [?] #33491 Strickland."

File consists of an illustration by Ian Sheldon of the butterfly Colias christina, also known as Christina's Sulphur. Handwritten note on the back of the illustration reads, "C.Christina [male] Thormin Coll' 17 km S. of Ft. Smith AB 23.Vi.81."

File consists of an illustration by Ian Sheldon of the butterfly Colias philodice, also known as Clouded Sulphur in yellow form. Handwritten note on the back of the illustration reads, "Acorn Coll' AB San hills nr. opal May 2001."

File consists of an illustration by Ian Sheldon of the butterfly Colias gigantean, also known as Giant Sulphur.

File consists of an illustration by Ian Sheldon of the butterfly Colias Alexandra. Handwritten note on the back of the illustration reads, "C. alexandra columbiensis [male] Thormin Coll' #40525 [Jenner?] Ferry AB 11.VI.78 modified to make it c.a. columbiensis by adding pinkish fringe [and] to [-?]"

File consists of an illustration by Ian Sheldon of the butterfly Colias meadii.

File consists of an illustration of the butterfly Plebejus icarioides pembina. Illustration can be found on page 178 of the book Butterflies of British Columbia by John Acorn and Ian Sheldon.

File consists of an illustration of the butterfly Celastrina serotina.

File consists of an illustration of the butterfly Lycaedies melissa melissa. Note on the back of the illustration reads, " Lycaedies melissa melissa. Empress AB 22. V. 76 JHA Coll."

File consists of an illustration of the butterfly Lycaena dospassosi. Note on the back reads,"Canadian National Collection 31-01-81 Bathhurst, NB Database for the Butterflies of Canada Project ex. J. [Trowbridge?] Coll. L.P. Grey."

File consists of an illustration of the butterfly Callophyrs lanoraeiensis. Note on the back of the illustration reads,"JHA Collection Pont-Rouge Quebec, Canada. 21.V.2000."

File consists of an illustration of the butterfly Lycaena epixanthe. Note on the back of the publication reads, "JHA Collection, Canada, Quebec. Portneuf Co. Pont-Rouge 05-.VII.94 Yves-Pascal Dion Coll. [subsp. phaedra?]"

File consists of an illustration of the butterfly Feniseca tarquinius. Note on the back of the illustration reads, "Source as dorsal."

File consists of an illustration of the butterfly Lycaeides/Plebejus anna ricei. Note on the back of the illustration reads, "L. abba ricei male v. source Butts. of BC p. 263 only."

File consists of an illustration of the butterfly Vacciniina optilete yukona. Note on the back of the illustration reads, " V. optilete yukona Bowman/Strickland Bilby AB 11.VII.23."

File consists of an illustration of the butterfly Celastrina neglecta. Handwritten note on the back of the illustration reads, "Canadian National Collection Ottawa Simcoe ON i.Vii 1939 TN Freeman Databased for the Butterflies of Canada Project 98-99."

File consists of an illustration of the butterfly Parrhasius m.album. Handwritten note on the back of the illustration reads, " Canadian National Collection Ottawa [?] Moneagle #34 [TENN?] el. 1500 July 5 1930 AG Richards (Coll' of Alexander B Klots)."

File consists of an illustration of the butterfly Erora laeta. Handwritten note on the back of the illustration reads, "various photo refs: no specimen to work from #7, p1.24 Butterflies of Canada Low, Quebec Hall bugguide.net Berkshire Co. Mass USA Tom Murray."

File consists of an illustration of the butterfly Leptotes marina. Handwritten note on the back of the illustration reads, " John Acorn Collection USA AZ Patagonia Harshaw area Aug. 7 99 JHA."

File consists of an illustration of the butterfly Leptotes marina. Handwritten note on the back of the illustration reads, " John Acorn Collection USA California San Bernadino Co. Ord's Mtn. June 13, 93 [?] Bob [Wuttken?]"

File consists of an illustration by Ian Sheldon of the butterfly Loranthomitoura spinetorum. Handwritten note on the back of the illustration reads, "Shaw Coll" Colorado, Spring Creek. 16.VI.78."

File consists of an illustration by Ian Sheldon of the butterfly Callophrys iroides. Handwritten note on the back of the illustration reads, "Pictorial refs only Butts of BC p216 [plus] webpage [website]."

File consists of an illustration by Ian Sheldon of the butterfly Incisalia mossi. Handwritten note on the back of the illustration reads, "C. mossi [male] Lawrie Coll" Whistler Mtn. [?] Beaver Mines Lk AB 23.V.99 et 5000' #99-05-23-04."

File consists of an illustration by Ian Sheldon of the butterfly Everes amyntula. Handwritten note on the back of the illustration reads, "Everes amyntula JHA Coll" Edmonton. 28.V.75."

File consists of an illustration by Ian Sheldon of the butterfly Celastrina ladon lucia. Handwritten note on the back of the illustration reads, "as dorsal."

File consists of an illustration by Ian Sheldon of the butterfly Celastrina echo. Handwritten note on the back of the Celastrina echo Butts of BC UBC 'Spring Farm?' middle only ref."

File consists of an illustration by Ian Sheldon of the butterfly Celastrina echo. Handwritten note on the back of the illustration reads, "Celastrina echo [male] v. Strickland B.C. Sanca Cr. FSR - 35 km NW Creston 29-IV-00 2880' Schmidt [?]."

File consists of an illustration by Ian Sheldon of the butterfly Lycaena cupreus snowi. Handwritten note on the on the back of the illustration reads, "as [male] dorsal."

File consists of an illustration by Ian Sheldon of the butterfly Lycaena hyllus. Handwritten note on the back of the illustration reads, " L hyllus Strickland M. Edm. AB 31.VII.40 Bowman [?]."

File consists of an illustration by Ian Sheldon of the butterfly Lycaene hyllus.

File consists of an illustration by Ian Sheldon of the butterfly Lycaena dione. Handwritten note on the back of the illustration reads, "L dione Edmonton AB Strickland 10.VII.43 Bowman [neg?]"

File consists of an illustration by Ian Sheldon of the butterfly Lycaena helloides. Handwritten note on the back of the illustration reads, "JHA Coll' Empress AB 22.V.76."

File consists of an illustration by Ian Sheldon of the butterfly Lycaena helloides. Handwritten note on the back of the illustration reads, "JHA Collection [Jenner?] 24 V 76."

File consists of an illustration by Ian Sheldon of the butterfly Lycaena mariposa. Handwritten note on the back of the illustration reads, "John's slides and specimen."

File consists of an illustration by Ian Sheldon of the butterfly Satyrium behrii. Handwritten note on the back of the illustration reads, "S. behrii Strickland sketch [and] happy [and] shepard colour/pattern refs."

File consists of an illustration by Ian Sheldon of the butterfly Glaucopsyche piasus. Handwritten note on the back of the illustration reads, "G. piasus from [safiterra?] Wittken Coll' San Gabriel Mtn. CA."

File consists of an illustration by Ian Sheldon of the butterfly Glaucopsyche lygdamus couperi. Handwritten note on the back of the illustration reads, "Glaucopsyche lygdamus couperi [female] Edmonton 28.V.75 JHA Coll' [and] slide Edmonton VI.99."

File consists of an illustration by Ian Sheldon of the butterfly Lycaeides idas scudderi. Handwritten note on the back of the illustration reads, "Lycaeides idas scudderi JHA Coll' Yukon 7.VII.85 [Julius Creek?]."

Subseries contains illustrations by Ian Sheldon of butterflies from the Papilionidae family.

File consists of an illustration of the butterfly Papilio brericauda.

File consists of an illustration of the butterfly Papilio polyxenes. Note on the back reads, "same as ventral."

Item consists of an illustration of the butterfly Eurytides marcellus. Note on the back reads, "Eurytides marcellus. Strickland Coll. 'H 16' no info."

File consists of an illustration by Ian Sheldon of the butterfly Parnassius smintheus, also known as Rocky Mountain Parnassius.

File consists of an illustration by Ian Sheldon of the butterfly Papilio machaon oregonius. Handwritten note on the back of the illustration reads, "Felix Sperling specimen Kamloops BC 1983."

File consists of an illustration by Ian Sheldon of the butterfly Papilio indra. Handwritten note on the back of the illustration reads, "P. indra [male] Green [Cayon/] Utah Lache Co. USA no date [Hilchie?] Coll'."

File consists of an illustration by Ian Sheldon of the butterfly Papilio rutulus, also known as Western Tiger Swallowtail. Handwritten note on the back reads, "Specimen: [?] from JA."

File consists of an illustration by Ian Sheldon of the butterfly Apodemia mormo. Illustration can be found on page 187 of the publication Butterflies of British Columbia by John Acorn and Ina Sheldon. Note on the back of the illustration reads, "as dorsal."

File consists of an illustration of the butterfly Libytheana carinenta. Note on the back of the illustration reads, "JHA Collection , Harrow ON, 16. VII.74 Peter C. Mason."

File consists of an illustration of the butterfly Speyeria idalia. Note on the back reads, "A. idalia. [Omaha?] [Ne-?] FH Marhall 180 VI 20 male UASM #211773 Strickland Collection."

File consists of an illustration of the butterfly Phyciodes tharos. Note on the back reads, "JHA Collection Jenner 1976 May 21 in [computer?] JHA Coll."

File consists of an illustration of the butterfly Limenitis arthemis astyanax. Note on the back reads,"JHA Collection USA Georgia August '97."

File consists of an illustration by Ian Sheldon of the butterfly Erebia vidleri, part of the sub family Satyridae. Handwritten note on the back of the illustration reads, " E. vidleri Thormin Coll' Bacwater WA Aug. 4 46 [?] Hopfinger."