Here is a Vintage Fish Lo-K-Tor Lowrance Electronics MFG Finder Locator Sales Brochure. I can't find the date for this, but it's after 1963 and before 1974 according to the companies records. It's a 3-page fold-out, color, made of cardboard construction paper, and measures 8 1/2" x 11" opened, no damages it seems to have been stored flat and in very good condition. This is for the brochure only, no equipment is included.
Thanks for looking
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