1969 Zenith Solid State Stereo Manual & Operating Guide Phonograph High Fidelity

Zenith Service Manual HF11 1964 High Fidelity and Stereo FM Models

Zenith Service Manual HF30S1 (Supplement 1) High Fidelity and Stereo FM Models

Zenith Radio Service Manual - HF-14 supplement - HIGH FIDELITY STEREO FM MODELS

Zenith Service Manual - HIGH FIDELITY and STEREO FM MODELS - HF22

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Original 1960s ZENITH HF28 Radio Stereo Service Manual FM High Fidelity

Zenith Service Manual High Fidelity Stereo FM Models HF19 923-606