These tapes are numbered under a separate system (with an "SC:T" prefix before each tape number). Some of the tapes documented in this subseries' larger, separate numbering scheme (the set without prefixes before tape numbers) are also in boxes labeled with the "SC" prefix, but those labels are often crossed out and are most likely out-dated. An index for the "SC:T" tapes was not included with the collection, but some of the tapes' boxes are labeled with the recordings' content (none of these labels correspond with Lipton's tape index for the larger numbered set).