L.A. Times Problem No. 55 by B. Giobel, Svenska Dagbladet, October 1923. Lifted from Alain C. White's 1927 Christmas Series 'Assymetry'. White mates in two.
FEN 8/8/8/8/8/8/1nKBkpQ1/8 w - - 0 1
Key: Q-R3/Qh3
L.A. Times Problem No. 56 by J.F. Tracy, Ontario, California. First publication. White mates in three.
FEN 1RbK4/8/2p1p3/2B1k1P1/4P2R/1p6/rb2P3/3N4 w - - 0 1
Key: R-N5/Rb5