Research refers to research done by Carol Litchfield. Items are in their original folders, and contain their original folder name if one existed, but there was no clear order to the folders so they have been rearranged at the folder level. The first part of the subseries is organized by location and contains notes, photographs and annotated articles created by Carol Litchfield. Files that are titled with “Academic article” are articles or partial articles that were not written by Carol Litchfield but were collected by her for research purposes. Some of these articles are annotated, presumably by Litchfield. Files titled “Experiments” contain data relating to a project Litchfield completed for the International Salt Company. “Miscellaneous” files contain notes, images, and presentations that are not about a specific location or were otherwise poorly labeled. “Paper” relates to papers or presentations that Litchfield wrote or presented. These files may contain drafts of the papers, copies of presentation slides, or related notes and research. It should be noted that it is possible that the location files at the beginning of the subseries may also contain notes that relate to these papers, yet are not clearly labeled as such. “Sources” indicate files of resources relating to salt.