+ 1964.f.c Norelco compact-cassette -first model
+++ 1987 .d. caseta/cassette DAT = Digital Audio Tape
+++ 1974(?).g. caseta/cassette Memocord MC990 Ind-X-Matic - single cassette w. built-in counter 
+++ 1958.a.c.- caseta/cassette pt/for Saba TKR15 radiorecorder
+++ 1964.e.c. 3M/Scotch Cantata 700 = greatest audio cassette
+++ 1944(?).a.c. Cosmos Industries MX-303A/ANQ-1 - wire cart
+++ 1942 .a. Textophon BW4 I - first audio cassette-3rd variant 
+++ 1962-3.f.c. 3M(Scotch) type 270
+++ 1975 (?).d. endless compact-cassette
+++ 1962 (?).e.c. caseta/casette Vity
+++ 1962.b.c. caseta/cassette Orrtronic Tapette
+++ 1992.b. ADAT casssette
++ 1973(?).l.c. caseta/cassette Memocord MT-570 Ind-X-Matic
+++ 1964.c.c. caseta/cassette Sanyo Magazine 
+++ 1947.a.c. caseta/cartridge RCA MI-12877