Courtesy of the Bentley Historical Library, Regents of the University of Michigan and supported in part
with a Grant from Amateur Radio Digital Communications (ARDC)
a. Prof. Hobbs Greenland Expedition (1927): https://bentley.mivideo.it.umich.edu/media/1_97jnbxsd
b. University High School (1957): https://www.youtube.com/watch?v=7sOkIZZVmGM&t=221s
- Prof. Hobbs Greenland Expedition (1927): https://bentley.mivideo.it.umich.edu/media/1_97jnbxsd
- University High School (1957): https://www.youtube.com/watch?v=7sOkIZZVmGM&t=221s