Masco - MA-50NR - Amplifier - Original Service Manual - 1949

Masco - MA-25HF - Amplifier - Original Service Manual - 1949

Masco - MB-50N - Amplifier - Original Service Manual - 1949

Masco - MC-25N - Amplifier/Phono - Original Service Manual - 1949

Philco- Model 50-520/50-5201 - Radio - Original Service Manual - 1949

Masco - MA-35 - Amplifier - Original Service Manual - 1947

Masco - MA-808 - Amplifier - Original Service Manual - 1947

Masco - MA-121 - Amplifier - Original Service Manual - 1947