Contract seismic survey field work performed by Weston Observatory staff, mostly in Massachusetts. Contains seismic field notes for each site and narrative reports for many. Also includes some correspondence and engineering plans, though the majority of this type of material are filed in the central files under the organization for whom the work was done.

Collection is open for research.

Film reels and audio tape reels are not available for playback due to format impermanence and cannot be reformatted by Burns Library at this time. Please let Burns Library Public Services know of your specific interest; when it becomes possible we will schedule reformatting.

Negatives, in box 60, are not an access medium and are not available for use; print photographs are available for access.