Young Merlin: His first time off the ground." p.96-97
[Clutch of eggs of [ ] Swift]. Watercolour; signed with initials. Facing p.29
"Young Merlin. Stage of plumage." Duplicate in unmounted photographs. Facing p.102
"Eastby Sanatorium." Watercolour, Unsigned. Figure 275
Young Merlin: His first time off the ground." p.96-97
"Young Merlin. Stage of plumage." Duplicate in unmounted photographs. Facing p.102
"Young Merlin." Duplicate (press print) in unmounted photographs. Facing p.101
"Baking oven, Skipton Castle." Pencil sketch; signed with initials. p.68-69
"Young Merlin." Duplicate (press print) in unmounted photographs. Facing p.101
"Young Merlin. Stage of plumage." Duplicate in unmounted photographs. Facing p.102
"Young Merlin." Duplicate (press print) in unmounted photographs. Facing p.101
"Baking oven, Skipton Castle." Pencil sketch; signed with initials. p.68-69
Black-headed Gull landing at nest. Duplicate in unmounted photographs. p.60-61
[Clutch of eggs of [ ] Swift]. Watercolour; signed with initials. Facing p.29
Black-headed Gull landing at nest. Duplicate in unmounted photographs. p.60-61
"Eastby Sanatorium." Watercolour, Unsigned. Figure 275
Black-headed Gull landing at nest. Duplicate in unmounted photographs. p.60-61
"Eastby Sanatorium." Watercolour, Unsigned. Figure 275
Young Merlin: His first time off the ground." p.96-97
[Clutch of eggs of [ ] Swift]. Watercolour; signed with initials. Facing p.29
"Baking oven, Skipton Castle." Pencil sketch; signed with initials. p.68-69
Turkey Buzzard. Pencil sketch; unsigned. Facing p.38
Heads of [Rusty] Blackbird and Brewer's Blackbird. Pencil sketches; unsigned. Facing p.62
Heads of adult Virginia Rail and adult Sora Rail. Pencil sketches; unsigned. Facing p.46
Heads of Yellowlegs and Evening Grosbeak. Pencil sketches; unsigned. Facing p.52
Heads of adult Sapsucker and immature Sapsucker. Pencil sketches; unsigned. Facing p.55
Turkey Buzzard. Pencil sketch; unsigned. Facing p.38
Heads of immature Virginia Rail and immature Sora Rail. Pencil sketches; unsigned. Facing p.45
Heads of Blackburnian Warbler and [Bay] Breasted Warbler. Pencil sketches; unsigned. p.46-47
Heads of Blue Jay and [ ] Teal. Pencil sketches; unsigned. Facing p.54
Heads of Olive-sided Flycatcher and Least Flycatcher. Pencil sketches; unsigned. Facing p.57
Heads of Black-billed Cuckoo and young Crow. Pencil sketches; unsigned. Facing p.49
Heads of adult Sapsucker and immature Sapsucker. Pencil sketches; unsigned. Facing p.55
Heads of Maryland Yellowthroats and Black and White Warblers. Pencil sketches, unsigned. p.46-47
Head of Shoveler, with details of beak, in colour. Pencil sketch by William Rowan; watercolour by Reta Rowan. Facing p.68
Heads of Blackburnian Warbler and [Bay] Breasted Warbler. Pencil sketches; unsigned. p.46-47
Heads of Black-billed Cuckoo and young Crow. Pencil sketches; unsigned. Facing p.49
Heads of Blue Jay and [ ] Teal. Pencil sketches; unsigned. Facing p.54
Heads of [Rusty] Blackbird and Brewer's Blackbird. Pencil sketches; unsigned. Facing p.62
Heads of Maryland Yellowthroats and Black and White Warblers. Pencil sketches, unsigned. p.46-47
Heads of [Rusty] Blackbird and Brewer's Blackbird. Pencil sketches; unsigned. Facing p.62
"Canada Warbler, male, Fawcett, Alberta." Pencil sketch' unsigned. Facing p.22
American Rough-leg [Hawk]. Pencil sketches, one unfinished; signed "A.B." [Allan Brooks?]. p.8-9
American Rough-leg [Hawk]. Pencil sketches, one unfinished; signed "A.B." [Allan Brooks?]. p.8-9
"Canada Warbler, male, Fawcett, Alberta." Pencil sketch' unsigned. Facing p.22
Heads of Rose-Breasted Grosbeak and immature Red-Breasted Grosbeak. Pencil sketches; unsigned. Facing p.36
Heads of immature Virginia Rail and immature Sora Rail. Pencil sketches; unsigned. Facing p.45
Heads of Olive-sided Flycatcher and Least Flycatcher. Pencil sketches; unsigned. Facing p.57
Heads of Eared Grebe and Scawp [Scawp duck]. Pencil sketches; unsigned. Facing p.67
Heads of Rose-Breasted Grosbeak and immature Red-Breasted Grosbeak. Pencil sketches; unsigned. Facing p.36
Turkey Buzzard. Pencil sketch; unsigned. Facing p.38
Heads of Tree Swallow and Hairy Woodpecker. Pencil sketches; unsigned. Facing p.44
Heads of Olive-sided Flycatcher and Least Flycatcher. Pencil sketches; unsigned. Facing p.57
Heads of Eared Grebe and Scawp [Scawp duck]. Pencil sketches; unsigned. Facing p.67
Heads of Tree Swallow and Hairy Woodpecker. Pencil sketches; unsigned. Facing p.44
Heads of Black-billed Cuckoo and young Crow. Pencil sketches; unsigned. Facing p.49
Heads of Yellowlegs and Evening Grosbeak. Pencil sketches; unsigned. Facing p.52
Heads of adult Sapsucker and immature Sapsucker. Pencil sketches; unsigned. Facing p.55
American Rough-leg [Hawk]. Pencil sketches, one unfinished; signed "A.B." [Allan Brooks?]. p.8-9
Heads of Tree Swallow and Hairy Woodpecker. Pencil sketches; unsigned. Facing p.44
Heads of adult Virginia Rail and adult Sora Rail. Pencil sketches; unsigned. Facing p.46
Heads of Blackburnian Warbler and [Bay] Breasted Warbler. Pencil sketches; unsigned. p.46-47
Heads of Nighthawk. Pencil sketches, one unfinished; unsigned. Facing p.47
Heads of Yellowlegs and Evening Grosbeak. Pencil sketches; unsigned. Facing p.52
Heads of Blue Jay and [ ] Teal. Pencil sketches; unsigned. Facing p.54
Heads of immature Virginia Rail and immature Sora Rail. Pencil sketches; unsigned. Facing p.45
Heads of Nighthawk. Pencil sketches, one unfinished; unsigned. Facing p.47
Head of Shoveler, with details of beak, in colour. Pencil sketch by William Rowan; watercolour by Reta Rowan. Facing p.68
Heads of Rose-Breasted Grosbeak and immature Red-Breasted Grosbeak. Pencil sketches; unsigned. Facing p.36
Heads of adult Virginia Rail and adult Sora Rail. Pencil sketches; unsigned. Facing p.46
Heads of Nighthawk. Pencil sketches, one unfinished; unsigned. Facing p.47
Heads of Eared Grebe and Scawp [Scawp duck]. Pencil sketches; unsigned. Facing p.67
Heads of Maryland Yellowthroats and Black and White Warblers. Pencil sketches, unsigned. p.46-47
Head of Shoveler, with details of beak, in colour. Pencil sketch by William Rowan; watercolour by Reta Rowan. Facing p.68
"Canada Warbler, male, Fawcett, Alberta." Pencil sketch' unsigned. Facing p.22
Rodent.
Rodent.
Rodent.
Shorebird.
Heads of Hudsonian Curlew and Avocet. "SEE ALSO p.72a." Pencil sketches; unsigned. Facing p.28
Shorebird.
Hutchin's Goose, Beaverhill Lake, Alberta. Pencil sketch, life size; unsigned. Facing p.52
Shorebird.
Hutchin's Goose, Beaverhill Lake, Alberta. Pencil sketch, life size; unsigned. Facing p.52
Heads of Hudsonian Curlew and Avocet. "SEE ALSO p.72a." Pencil sketches; unsigned. Facing p.28
Heads of Hudsonian Godwit, Beaverhill Lake, Alberta. Facing p.30
Heads of Hudsonian Godwit, Beaverhill Lake, Alberta. Facing p.30
Heads of Hudsonian Curlew and Avocet. "SEE ALSO p.72a." Pencil sketches; unsigned. Facing p.28
Heads of Hudsonian Godwit, Beaverhill Lake, Alberta. Facing p.30
Hutchin's Goose, Beaverhill Lake, Alberta. Pencil sketch, life size; unsigned. Facing p.52
[Grosbeaks].
Head of Lesser Canada Goose. Norman, California. Details of beak and foot. Pencil sketch "absolutely full size" by A.B. [Allan Brooks?]. Facing p.4
[Grosbeaks].
[Grosbeaks].
Head of Lesser Canada Goose. Norman, California. Details of beak and foot. Pencil sketch "absolutely full size" by A.B. [Allan Brooks?]. Facing p.4
Head of Lesser Canada Goose. Norman, California. Details of beak and foot. Pencil sketch "absolutely full size" by A.B. [Allan Brooks?]. Facing p.4
Grouse.
Spruce hen.