Acme-Gridley Multiple-spindle Chucking Automatics: Design, Construction, Tooling and Operation - Very detailed and comprehensive American publication for all the 4, 6 and 8 spindle Models of the R, RA, RAS, RB, BRA Types in 4, 6 and 8-spindle versions. As a complete guide to these lathes (and as-built, for example, as the BSA RAB Type) this is the most complete publication.

BSA Acme-Gridley Multiple-spindle Chucking Automatics - later Edition: Very detailed Operator's Instruction Manual that shows: Setup and Operation, Basic Principles of Operation, Mechanisms and Motions, Tooling, Process Planning, Tool Design, Maintenance Instructions with Schematics. This is the best manual available to get these machines working efficiently.