McCord, James Newton, 1877- · New York, London : D. Appleton and company · leaf 90
f rods have been invented to permit the removal or addition of a card without this oper- ation, including the folding rod. Below are given illustrations of a range of punches. Naturally the guides are punched to conform to the cards. Card Guides. Guides for cards, of course, perform the same serv-…
Filing systems
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
