I found a reference to the Richie Rich Old Timer Car on ToyNfo.com The Vintage Toy Encyclopedia, and added a link on the Larami Corporation Manufacturer page. There is no mention of the different variants, but it is nice to see a Harvey item acknowledged.

While I was editing the Larami Corporation Manufacturer page, I also added a brief history as supplied by Wikipedia, a link to Plaid Stallions Larami Rack Toys page, and a link to Battlestar Wiki’s Larami Corp page (from the Internet Archive Wayback Machine). The Battlestar Wiki page is mentioned again in this post:

Data: what matters? Part 1