Marked Maps'' Tonka and others..

I am going to date myself by about a million years.. back in the early 80’s.. there was a company in the twin cities, that had MARKED MAPS of Minnetonka and other lakes in Minnesota.. these were AL Lindner’s Marked Maps.. thats not what they were called but that’s who marked them. .and the ad’s appeared back in the early days of Infishermen.. anyone here want to tell us about these maps and are they still available.. or does anyone want to sell copies of them.. way way back in the day.. we used this map to fish Tonka for the first time.. I didn’t have the copy, the guy I got paired with did. .the notes were really really interesting.. thanks..