This archive contains listings of APL objects (functions and variables) recovered from MCM cassette tapes donated to York University Computer Museum in 2015. The tapes' content was created between 1974 and 1975. All the functions are written in MCM/APL which is described in user's manuals for the MCM/70, /700, and /800 computers (see MCM archives at http://www.cs.yorku.ca/museum/collections/MCM/MCM.htm). The raw data for these tapes is also available from York University Computer Museum.