Herbert No. 4, 4B and 4C Capstan Lathes: Operator's Instruction Manual. Includes 2 editions, early and late, covering all models.

HERBERT 4, 4B and 4BS Capstan Lathes: Parts Manual as Exploded Component Drawings (the Parts Manual for the Model 4 was changed from simple photographic plates to a fully drawn, absolutely clear exploded-component edition in the 1960s).