Halftone blocks corresponding to magicians’ photographs in ‘Will Goldston’s Who’s Who in Magic’

These 40 or so blocks look brand new and it is clear they have not been used to print anything. It seems they must be spare blocks, in case they were needed during the print-run of the book. The images shown here include the halftone blocks for Robert Harbin and Charles Bertram. There is also a PDF which lists all of the magicians included on these blocks and explains how the pages of illustrations were printed.