The American Film Institute Catalog of Motion Pictures
Produced in the United States: Film Beginnings, 1893-1910,
A Work in Progress, two volumes
Elias Savada, compiler

Metuchen, New Jersey : The Scarecrow Press : 1995.

This mammoth undertaking is still incomplete (as the title states), but is a valuable reference work nonetheless. Includes a number of listings for short films that, technically, don’t belong in this work — films produced outside the USA that were circulated by American distributors.

PSFL source: AFI-A.