This company made only one model, in kit and RTR versions. There are variations in colors and packaging. More pictures on the LASCM website HERE.
1) Original kit issue, December 1965:
Reduced: 94% of original size [ 850 x 487 ] - Click to view full image
Note that the front wheels are fully assembled.
2) Second issue, without the wheels assembled (outer box remains the same): Reduced: 94% of original size [ 850 x 459 ] - Click to view full image
Note also that the bottle of salad oil is gone and the reshuffling of the motor and other parts on the tray.
3) Third issue, the RTR model, in a new window box:
Note the rubber goggles on the geekoid driving the thing:
4) "Series 2" kit uses the RTR box with a sticker: Reduced: 89% of original size [ 900 x 587 ] - Click to view full image
Note the white tray and slightly different packing... you can see a lot more detailed pictures of these kits and the RTR in the LASCM website.
The company folded in early 1967 as a slot car manufacturing concern, but kept in the rubber goods business (no, not THAT one!) until the early 1970s when its assets were bought out by Firestone. Apparently, the GRC corporation still exists in Los Angeles but as in name only.
www.lascm.com