California Midwinter International Committee Corner Cards. Lot of three covers with various official corner cards, included is cover with all over Expo design with corner card of the "Offices of the Executive Committee", 2nd cover is a 1¢ Postal entire with printed illustrated design of the "Office of the Director-General", entire forwarded with 1¢ postage due, last is 1¢ Postal entire with corner card of the "California Wold's Fair Commission", Very Fine. Estimate  $150 - 200. $0 (Image)