My grandfather was known to always have a chevy 3/4 ton green pickup. The only one I remember happens to be the last one he had. It was a 1969 C20. I came across this picture of an earlier model which was taken around 1957. I think by the body style(flat sides of the bed and rear wheel wells seem to be round and not square) that it is a 1955 or earlier. Any help determining the year model would be appreciated. Here are the only pictures I have.
http://i1251.photobucket.com/albums/hh545/dalewis29/3600.jpg

Also, I have one more picture. Not sure what make, model or year. All you can see is the front. It was taken between 1954 and 1957 maybe. Any help would be appreciated.

http://i1251.photobucket.com/albums/hh545/dalewis29/dadandfrontofcarortruck.jpg