Information on this issue from Tom Lammers and Ger Apeldoorn via the Atlas-Timely discussion group.
The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Third Series, Vol. 2, Part 2, No. 1, Periodicals, 1948, p. 32, Copyright number: B124861.
This story features French criminologist Alphonse Bertillon (1853-1914). He is erroneously credited with the development of fingerprinting. Bertillon actually developed the identification system known as Anthropometry, which was discredited and replaced by fingerprinting.