The Dents traveled extensively as well, enough to earn Lester a membership in the Explorers Club. He was sponsored by fellow pulp writer J. Allan Dunn and Navy Reserve Captain Charles Richardson Pond (1889–1969), a member of the family that owned Pond's Cosmetics and a pioneer of transoceanic flight. He was elected to membership on November 9, 1936 but was apparently not all that involved in the Club beyond bouncing story ideas off more experienced members. He contributed to a year-long one-time fundraiser for the Club conducted throughout the year 1939, for which he was awarded a sterling silver miniature of the coveted Explorers Club Medal, No. 89 of an unknown number of such medallions, with a chain allowing it to be worn as a bracelet. He stopped paying his annual dues in December 1945 and was dropped from membership for this delinquency in January 1948.