More to explore:
1908 advertisement for Cora Strayer's detective agency, founded by her in 1902 (a little creative licence used in the ad stating est.1880! naughty!) She found her niche as a Ladies' Detective Agency, long before Alexander McCall Smith and Mma Ramotswe! This tickles me so much. Information compiled by Chicago history buff, Paul Reda, with more details and earlier line ads after the click through.
~ The Chicago Blue Book, 1908. A female private detective in 1908?Awesome.
1908 - Private Detective Agency - ad promoting a female detective
My future business card! Previous pinner wrote: "Cora Strayer lived on the South Side of Chicago at the turn of the 20th century, at which time she seemed to be running a private detective agency. Full story here: http://www.themarysue.com/cora-strayer-detective/"