[London. Underground] H. C. Beck, Henry Charles Beck, RAILWAY MAP LONDON UNDERGROUND TRANSPORT, 1937, No. 1. ISSUED FREE. Printed by Johnson Riddle & Co. for London Transport, 55 Broadway, Westminster, S.W.I, Victoria 6800. Signed in lower left-hand corner below the reference, “H. C. Beck.” This 1937 underground railroad pocket map was issued just four years after Henry Charles Beck’s revolutionary railroad map design made its first appearance in 1933. Beck’s first series design maps ran from 1933 to 1938. 14.5 cm x 25.7 cm. This map’s blue border was trimmed slightly to fit into a pocket diary, where it was preserved in good condition.