BSA Herbert Single Spindle Auto lathe 48, Operator's Manual also useful to help with the 68, 98L, 138L and 168L 

BSA Single Spindle Auto Lathe 48 Maintenance and Dismantling Manual also helpful with the 68, 98L, 138L and 168L.

Tool Layout and Cam Design
For BSA Single Spindle Autos

Comprehensive 180 page guide to laying out tools and designing cams for BSA single spindle automatics.

BSA Single Spindle Automatics. Attachments Parts Book as Sectional Drawings (includes: the Slotting. Transfer, Swing Stop, High-speed Drilling, Rear End Drilling and Deburring, Nut Tapping, Third Slide, Screw Slotting, Worm Drive Screw Slotting, Swing Stock Stop, Thread Cutting and Box-Type Third Slide Accessories.

BSA No. 98L, 138L, 168L Single Spindle Automatic Screw Machines: Operator's Instruction Manual

BSA No. 98L, 138L and 168L Single Spindle Automatic Screw Machines: Spare Parts Manual as Sectional Drawings.