The numbers of Psyche issued during the past year were mailed on the 
following dates: 
Vol. 73, no. 4, Dec., 1966: May 24, 1967 
Vol. 74, no. 1, March, 1967: August 18, 1967 
Vol. 74, no. 2, June, 1967: November 3, 1967 
Vol. 74, no. 3, September, 1967: February 20, 1968 
