Frontier Sign History

Frontier Sign History
Frontier oil/gas began in 1940 when Bud Robineau broke off from his partner at Bay Oil in Denver and Bud got the refinery they had acquired in 1935 in Cheyenne. 
The first Service Station sign they used was the dsp 5’ round all white sign with Cowboy on raring horse. I’m guessing 1940-43 
It was a hanger sign from the pix I have
1943- 45 They changed to the white keyhole sign which is a different shape than the red keyhole signs that came later
45-50 A few round 5’dsp Gold Cowboy were produced and very few survived. 
50-55 the 6’ Red Keyhole signs were made by ING - RICH - TULSA and by S.P.S. (Southwest Porcelain Steel) They made 2 different styles plus 4’ red Keyholes
55-67 They made the 6’ red and White Silhouette sign that is the most common. Most of the signs were ssp and 2 were used in their unique pole signs
In 61-63 a few dsp signs were also made with same design.
They also made a few 4’ red and white dsp signs during this period. 
(A few 4’ red keyholes were made sometime after 55 as well as a few red and white 4’ Silouette signs, which were round without the divet in the bottom like the 6’ signs had.)
There was also a rectangular GS1000 sign that was used by Frontier after they purchased the Beeline refinery in SLC in 1960. Few people know it’s associated with Frontier. 
Robineau died in 1967 and Frontier sold to Husky.