Harvel and Ron, Thanks for your information. I forgot to mention in my first post that I had already found information on the SS Four Lakes itself.
Ron, Can you tell me where you found the records of the five voyages you found his name on? I'd like to try to get that for myself.
Again, thanks for your help. I almost thought I was at a dead end on researching my grandfather's role in the war. You've brought me some new information and I thank you.