Series consists of 291 issues from Secret Service.
Publisher: Varies: Frank Tousey (nos. 1-1207), Harry E. Wolff (nos. 1208-1374)
Date of First Issue(No. 1): Jan. 27, 1899
Date of Last Issue(No. 1374): May 22, 1925
First in Collection (No. 58): Mar. 2, 1900
Last in Collection (No. 732): Jan. 31, 1913
Secret Service is a weekly publication. The format is 8 x 11 inches, with 32 pages. Issues cost 5 cents. Pictorial covers are coloured. All stories after issue no. 726 are reprints of earlier issues. Consists primarily of mystery and detective stories. With issue no. 442, short stories and serials appear following the title story; with issue no. 671 the phrase "And Other Stories" appears on the cover.