(This was originally posted on my Livejournal, but I have moved it here and updated it).
The University of Tulsa, McFarlin Library, Department of Special Collections and University Archives has in its collections a roster of the KKK in Tulsa for the years 1928-1932. It is part of the Ku Klux Klan (KKK) papers, 1924-1995, bulk 1924-1936. Coll. No. 1993.001.
Since 1993, it has been the Department’s policy has been to not show the original to anyone, but let them use the photocopy, out of concern that it might be damaged. This roster was, according to legend, one of four, and only covers the declining years of the Tulsa Klan.
In 2011, Special Collections had it digitally transcribed.
Using that transcription I was able to make the following determinations:
In 1928 registered membership was 975 members, consisting of 720 Democrats, 251 Republicans, 3 Independents.
In 1929, membership was 240.
In 1930, membership was 199.
In 1931, 87.
In 1932, 28.
There are 16 memberships with no discernible year.
Conversely, membership in 1921 (August 31, after the riot), the Tulsa Klan enrolled its first 300 members. By 1924, when the Governor declared martial law in Tulsa, there were reputedly upwards of 10,000 members, not including the women’s auxiliary and children’s groups.