WRG 1925 – 1950 Armor and Infantry Rules

The Wayback machine has stored a copy of the WRG 1925 to 1950 armor and infantry rules from 1973.

WRG Ancients 7th Edition

WGR Ancients 7th Edition is available for free as a pdf download.

Wargames Research Group War Games Rules 3000 BC to 1485 AD

Wargames Research Group Ancients – 5th Edition

Wargames Research Group has a page with lots of their older sets available, including the Fifth Edition Ancients, which were the standard for many years.