Photos arranged on tableAngela Schad wrote the text, compiled the bibliography, and selected the images for Observing Earth and Atom, with assistance from Shaun Hardy.  Michelle Scholtes and Mark Maskell provided website design expertise and technical oversight.  John Strom developed the search interface for the collection catalog and manages the image database.

The DTM Instrument Photograph Collection was processed through the generous support of the Center for History of Physics, American Institute of Physics, by archivists Joseph Neumann and Emily Rupp in 2009.  The Geophysical Laboratory’s photographs of historic instruments and apparatus were organized and documented by Angela Schad in 2013, under an archives internship from the Carnegie Institution.

All materials shown in Observing Earth and Atom are held in the archives of the Department of Terrestrial Magnetism and Geophysical Laboratory.