As a teenager always I had my nose in the Britannica world atlas and in 1987 - same year I moved out of my parents, I bought a Rand McNally road atlas for a road trip to Rehoboth Beach, Delaware. I had that atlas for many years and I too recall the corner where it mentions the highest point and how it's denoted on the map with a dark triangle and other mentioned peaks have a clear triangle. Once we started on going more road trips, the family would eventually get me a new Rand McNally and sometimes a AAA one. Back in 2002, someone got me Mapster's RoadMaster Large Print by accident. But I came to prefer the large print and can't go back to the other brands.
Anyhoo, back to the high point subject. I made mental notes of high points that appeared to be accessible by car and if it wasn't far out of the way when we were traveling, I made it a point to make a side trip. The first one was Mt Washington in 1992. Then in '93 we traveled down Route 101 in RI and saw the road sign. At the time I thought that was the highpoint. A week later we visited High Point, NJ.
I eventually found Don Holmes' book in Eastern Mountain Sports and the quest started whole heartedly. I immediately sent out for the Highpointer membership and getting our first newsletter we saw that the next highpoint convention would be in Vermont the following month. We didn't attend the banquet but we did go to Mt Mansfield that day and met a few fellow hp-ers that day including Mr Holmes.
Up to 37 now. Certain hp's we know are beyond our capabilities but we'll be tickled if we make it 45.