Bought a 1st edition of Arthur C. Clark’s “The Exploration of Space” (1951) ($3). Do you think this is the ex libris of THE Eugene F. McDonald Jr. – died in 1959?

Bought a 1st edition of Arthur C. Clark’s “The Exploration of Space” (1951) ($3). Do you think this is the ex libris of THE Eugene F. McDonald Jr. – died in 1959?