Box 198 contains restricted materials from boxes 5, 8, and 33; Box 199 contains restricted materials from boxes 35, 39, 40, and 41; Box 200 contains restricted materials from boxes 46, 55, 57, 58, 60, 71, 77, 78, 79,85, 92, 95, 97, 100, 105, 116, and 124; Box 201 contains restricted materials from boxes 128, 133, 135, 136, 157, and 191.

Selected folders containing personnel, individuals' financial, or other sensitive information are restricted, usually for 50 years. In addition to the folders that have been moved to boxes 198-201, described above, the following material is restricted for 50 years from the date of creation: Box 4 is restricted until 2027-2045; Boxes 28, 29, and 30 are restricted until 2039; Box 31, folders 1-43, are restricted until 2024-2031. Folder 44 is not restricted; Box 32 is restricted until 2033-2036.

Negatives of the Primary Source Microfilm edition and 106 additional reels of material not included in their commerical product are housed in Rare and Manuscript Collections as a master/preservation copy, and are not for researcher use. These are reels 1-298 in Boxes 202-206 and reels 299-405 in Boxes 264-265.