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 No. 8 Centerless Grinder (also branded Herbert). Two Operator's Manuals - one early the other late - with useful sectional drawings and a wiring diagram. Includes a copy of the maker's detailed and well-illustrated Sales & Technical Specification Catalogue.