London: John Betts, 1841. Comprising of a leather-covered box shaped as a book, containing 142 of 144 question cards, thirty of forty-four red counters and eight of ten white counters; also a 34 page book entitled, Key to the Interrogatory Game of Useful Knowledge. The box has lost its brass catch; else very good. The missing cards are numbers 89 & 90. This game was first published in 1832.