Norwegian ethnographer and adventurer (1914-2002) best known for the Kon-Tiki expedition, during which he tested the theory of early contact between South America and Polynesia by successfully sailing a raft across the Pacific Ocean. Ballpoint signature, "Thor Heyerdahl, 1997,” on an off-white 4 x 3 bookplate. In very fine condition. Encapsulated and graded by PSA/DNA as “NM 7.”
