'Hasborg' had me stumped for a while until I checked the bottom
of the Avalon Hill homepage and saw 'a subsidiary of Hasbro'
Was that a typo or an intentional dig as Hasbro for screwing up the game in some way?
Avalon Hill games are now being managed by the Hasbro subsidiary Wizards of the Coast. The Avalon Hill section is found here: Avalon Hill Games.
For some titles, they remade the components, but kept the spirit of the games (Acquire, Merchant of Venus, Axis and Allies, etc.). But most of the catalog is tied up in rights... basically it would cost more in lawyer fees to resolve who owns what than Hasbro would make in selling or licensing rights, or reprinting titles. So they just languish.
Avalon Hill was originally owned by Monarch Publishing, so they had their own printing facilities and dies for the boards and pieces. By the late 1990s, the market for deep war/conflict simulation games had waned, and was being replaced my simpler, more appealing "Euro" style games, so Avalon Hill became a dinosaur.
At the time of its heyday, it's main competitors were Simulations Publications, Inc. (SPI), Victory Games, Yaquinto, and some smaller companies.
Here are some more older, targeted websites that have more legacy content on the Avalon Hill/SPI era of games. These two sites are frequented by the "old-timers" who started playing these games when they were first published in the 1970s.
ConsimWorld Forum, and its home site Consimworld.com.
-PJ