Riders & other TV repair documentation

[hammr7]

I recently purchased a huge collection of Sams and other electronic repair documentation. I was looking to increase my library as it relates to audio equipment.

Included was a fairly extensive collection of Riders Television Repair books (large, bound books), a number of earlier TV repair books by brand (most covering 1948 - 1953), a number of "Annual" TV repair books from the late 1950s and early 1960s, and service documents that were released by the TV manufacturers themselves. I imagine they are of much use to the TV collectors, but don't know if the market has already been saturated (more documentation than current collectors). Do people use and collect these?