Seven official postcards of the 11th Zionist congress (does not appear in Riemer catalog), 12th Zionist congress (two different cards), of the 13th (two different cards), 16th and 17th congresses. Five have been mailed, with the congress ink stamps. Printed on the postcards are: Herzl's grave, Herzl's portrait, works by Hermann Struck, Joesph Budko and Uri Lesser. Riemer no. 38, 39, 43, 44, 61, 66. Condition varies.