I don't claim to be an expert on the older TC & MM, but my understanding was the MT and KT were similar with the KE engine, while the KTA and MTA were similar with the improved KEA engine. The s/n of your engine indicates KEA so I would think you would be better off with a KTA or MTA manual than a KT or MT manual.
Having said that, I have a Universal Tractor Parts Manual R744D with Supplement A in the front that covers the KEA engines beginning 525401 for MTA tractors 525346 and up. If that is the one you got from Jennsales, you are probably OK - if not I can probably scan Supplement A and send it to you - just send me an email. The corresponding Kombination Tractor Parts Book is R739F again with Supplement A covering the KTA with KEA motor.
I have never seen an Operations / Maintenance Manual for MTA, but no doubt there was one - expect you may also have a Supplement to cover the A suffix. The KT manual I have seen (but do not have) is R740 - latest revision I have seen is R740A.
1937 JTS, 1939 RTS, 1944 ZTS, 1947 RTI, 1948 RTU, 1950 ZAS,
1950 UTU LP; 1952 UTS; 1953 UBU; 1954 RTI, 3x 1958 GB LP
+Allis Chalmers, Cletrac, J.I.Case, Massey Harris, Oliver; + 1965-71 Cars