Box 1: 50 slides labeled "National Geographic Society" which show American and New Zealand scientists, members of an expedition organized by the National Geographic Society and led by astronomer Samuel Alfred Mitchell, who traveled to Canton Island (also known as Kanton Island or Abariringa Island) in the South Pacific to study a total solar eclipse in June 1937. Included are images of Paul A. McNally, S.J., who was a member of the expedition. Slide 8, for example, shows Fr. McNally saying mass on the deck of a ship. [Slides 1 and 22 are cracked].
Box 2: slides labeled "National Geographic Society" and numbered 32 to 73 with gaps. Also present: slide labeled " Eclipses - Georgetown University Eclipse Party, 1936 - N.Y. Times" of members of expedition, including Fr. McNally and Thomas J. Smith, S.J., and E. J. Kolkmeyer, S.J., traveling to Siberia to study the eclipse of June 19.