All signed and dated on the reverse.
Dimensions: (cm)

a.99 * 124.45 , signed and dated May 20, 1961
b.99 * 124.45 , signed and dated June 27, 1962
c.99 * 58.42, signed and dated June 2, 1962
d.78.74 * 99 , signed and dated May 14, 1962
e.58.42 * 114 , signed and dated November 20, 1962