This article is from the Piano Purchase and Maintenance FAQ, by Isako Hoshino email@example.com with numerous contributions by others.
The piano supply outlet which deals with hobbyists is,
Player Piano Co.
704 East Douglas
Wichita, Kansas, 67202
Tel. (316) 263-3241
Just call and they will send you a free catalog. They also
sell the Arthur Reblitz books mentioned in section [5.2.1].