They were a great Company - their products (Sinclair made) were always of the highest quality and worked as advertise, at least the one's I purchased.Back in the day when I lived in Wyoming before computers and the Internet took over the world I used to leaf through my Sinclair catalog until the pages started falling off.
Their catalog was more than just a list of products and prices, often it contained helpful information. Like you, I would constantly page through it. It's a great loss to the precision shooting fraternity.