A tramway to heaven. G. P. Mellon, undated

A tramway to heaven. G. P. Mellon, undated, - 06 PDT 10 Sub- 3 Box 20 Folder 51, Box: 20, Folder: 51. Philip Duncan Thompson Papers, - 06-PDT. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/1906 Accessed April 21, 2026.