6 Sets of Humorous Stereographs

6 complete sets (14 cards) of slapstick sequences, American gelatine silver prints, (1) "Before Marriage - After Marriage", set of 2 cards published by The American Stereoscopic Company, (2) "The Midnight Spread" set of 4 cards published by “The ‘Perfec’ Stereograph” (3) 4 sets of 2 cards each published by Keystone View Company: "Pickwick´s mistake" (no 97, 98), "Not late yet dear" (no 533, 534), "Before and - After" (no 988, 989) and "Biddy, You May Serve the Tomatoes Undressed" (no 10409, 10410), all in perfect condition.(84)