Magnavox Astro-Sonic Important Instructions

I've recently finished refurbing and tweaking in a 1966-67 Magnavox Santiago console stereo purchased from the original owners who were torn to see it go. I'm interested in obtaining the "Important Information" packet that accompanied these beasts. They actually had the sales receipt from Gwinnel's in Illinois but the paper work was sadly put with another modular stereo they gave away earlier. The model number is: 1P380. The chassis number is: R21406 AA. The Micromatic turntable model number is: W 620-11-00. These papers typically covered many models. It may be necessary to match pictures of the face of the stereo's control panel with images from said manual. But for starters, my panel has six large knobs that are for: Timbre/On-Off, Bass, Treble, Tuning, Function, and Loudness. There are no other (smaller) knobs for either Balance or Int/Ext Speakers. Any and all Help would be greatly appreciated. Cheers, John.