Exterior view of the " 69" transmitting apparatus at the Maryland State Agricultural College. Photograph taken on March 29, 1918 by Marshall of the This image is not meant for publication and was labeled as 7083 in the laboratory notes.

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Size: 7983px × 6305px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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