The perfect companion to Perera's "Telegraph Collectors Guide" book is this collection of reference material on the telegraph.

The 2nd edition (2007) CD includes 7000 photos and descriptions, with 7 complete books and 6 early catalogs of telegraph equipment (dating from 1848 to 1929), plus additional material including 3 periodicals contents, 2 museums, a US Navy training file, price guide, 3 historical maps, 5 company histories and more.

The CD's are in new/unused condition and come in a case as shown.