Gumshoes, Sleuths, and Snoopers - A searchable database of mystery novels published between 1930 and 1965. This is based on the George P. Kelly collection at the University of Buffalo.
Vintage Paperback Collection - The evolution of the American paperback for the 1940's to the 1970's. Bowling Green State University, Bowling Green, Ohio.
Detective Fiction - A varied collection at the Harry Ransom Center at the University of Texas.
Edgar Allen Poe - A collection of Poe materials at the Harry Ransom Center.
Mystery Writers of America - "The Lilly Library Manuscript Collections at Indiana University-Bloomington holds the complete papers of the organization, from correspondence to photographs to financial documents." Bloomington, Indiana
The Marjorie Allingham Society - There is a collection of her books atThe University of Essex Albert Sloman Library, Essex, UK. But I cannot find a link to it that works.
Ngaio Marsh - This is the site of the National Library of New Zealand. I would advise you to search for the name Ngaio Marsh and your search will return a wealth of material.
This site is maintained by Linda Bertland,
Philadelphia, PA. Please address any comments, additions, or corrections to info@sldirectory.com