Revision: 1969_Sackson_227_July 26.jpg

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7/25 7/20 SATURDAY 26 JULY St. Anne 1969 207th day - 158 days to come

Went to Library Annex on 43rd St. and looked at the two patents I mentioned in my book. No. 729,489 (May 1903) by F.A. Cigol is just a set of dominos done in 2 plys, the back ply being an ink erasor.

[diagram of 4 x 3 grid, letters reading: 1st row: D, E, A, R; 2nd row: A, M, E, R; 3rd row: I, C, A, (blank)]

No. 1,274,294 (July 1918) by Frederick Lobl is a sliding block puzzle as shown, the pieces being edible. Their is a hole in each so that they don't have to be handled, a stick be- ing provided to move them. Also looked thru the first 4 months of 1937 and found a number of patents to order.

At McGraw-Hill Book Store bought GAMES FOR SECOND LANGUAGE LEARNING by Gertrude Nye Dorry. On 8th Ave bought the June 1969 Scientific American. In Macy's bought an extra copy of KRYPTO, marked down to $1. Didn't see anything new at Macy's, Woolworth's or Gimbel's.

Called Martin Gardner to tell him about the sliding block puzzle and discussed whether, with the duplication of letters, it could always be solved. (Yes.) He would still like the patent. I said I was sending for others and would get this one for him. He argued, but finally gave in.