Square Deal Oil Co had 5 stations listed on this 1949 map but later became a Phillips distributor.
1950 Simpson Oil Co map was later was owned by Sinclair.
1959 Drake's Refinery Stations map was Lansing, Michigan based with 30+ stations that have been sold individually.
1955 Speed King is an unknown that I followed leads toTwining, Michigan,Napoleon & Defiance, Ohio with no luck.
Hen ; I don't know of any Cavalier signs but they may exist.