Student, not expert, but.. the definitive reference is [1]. The front matter establishes a system for taxonomy of signs: one hand or two, handshapes, location, motion, facial expression, modifiers, classifiers, etc. and then has a big dictionary. That front matter should be very helpful for translation authors. Note however, that's their dialect/accent, and other regions will have variations. Bill Vicars [2] is pretty good about cataloging many variations but it's all video material, not reference.

1. https://www.amazon.com/Gallaudet-Dictionary-American-Sign-La...

2. http://asluniversity.com