Weightman, R. Hanson (January 1937), "Some results of the stratosphere flight of explorer II in America", Quarterly Journal of the Royal Meteorological Society, 63 (268): 75–78, Bibcode:1937QJRMS..63...75W, doi:10.1002/qj.49706326813.
Weightman, R. Hanson (January 1937), "Some results of the stratosphere flight of explorer II in America", Quarterly Journal of the Royal Meteorological Society, 63 (268): 75–78, Bibcode:1937QJRMS..63...75W, doi:10.1002/qj.49706326813.