Interesting site. With regard to Ford, you are missing the Ford Crest in Red, White and Blue which replaced the oval from 1950 to 1963 on Ford cars. The oval was only used on Ford parts and on the door sill plates during this time. Ford used block letters and/or a variation of the crest from 1964 until 1982 when the Blue Oval returned.

Ford Trucks used different logos from the cars in the 1950's through the mid 1960's featuring a Keystone shaped badge with a gear and lightning bolt.