Manuals, guides, tapes, and reference materials for watchmaking, jewelry repair, and gemology. Includes manuals such as C.E. Marshall’s ‘Watchmaker’s Handy Manual,’ Ewing Brothers ‘How to make more profit on watch and jewelry repairs,’ ‘The Guide’ (1996-1997), various ‘GemGuide’ volumes, repair guides, and invoices. Also includes VHS tapes labeled ‘Repairing Jewelry – Tapes No. 1, 2, 3’ and books such as the Jewelers Board of Trade (September 2016).