Paper Clock
Working paper clock, by James Smith Rudolph. This model was discovered by Isaac Asimov in 1947 in ¨ a dusty old paperback in an dusty old Paris bookstore¨. The bookseller told Asimov he had found it long before World war II, and that the person responsible seemed to have disappeared. Thirty-six years later Asimov revised the model and had it published by Harper and Row.
In 1995 I bought two copies at the Greenwich Observatory giftstore in London.
