These books are downstairs in the 391s call number range.
This is where all books on costume, clothing, accessories and fashion are shelved. Go down and explore!
Your costume research should include use primary, historical research as well as evocative research images.
For historical research, start with books on 20th cen. - or more specifically 1940s - fashion for Talley's Folly:
Searching collections from museums, universities, and fashion institutes are also a good idea:
Recommended books on scenic and set design in general: