Welcome to the forum. Post your question about your grandfather's company in the "General Petroliana Discussion" forum and maybe some one can help you with your research.
As far as the can values go, post that question in the "Petroliana Value Question" forum and you will probably get an answer. Try to post a picture for the best response.
Edited by Speedracer (Sun Aug 13 2017 10:16 PM)
Currently looking for a WHITE STAR Staroleum or Staroline sign and a FILMOIL sign. Send a PM. Thanks.