Peter,
Thank you for the nice comment. I appreciate that. Actually, a fair amount of that kind of aircraft model trivia is designed into my aircraft model sorts found from my Home Page here. You could find out when Cessna first started calling the C180 the Skywagon, for example (quite a few years after it was first introduced), or details of the many, many M20 Mooney models-(Al Mooney's 20th aircraft design), first metal wing M20 model, first long cabin M20 model, etc. I have separated such sorts so folks can find just such things, or maybe settle bets? I also try to list my Aircraft Make/Model sorts by order of production, newest last which is logical, and easiest to add, I should add.
Another A-D example: Timothy Aanerud has a great slide show of the different original factory color schemes on the Cessna 172 with scheme change examples for each year of production. Who was to know? Now we all can. That took a nice bit of doing on Timothy's part.