Can anybody identify year or make of any of these trucks.

[Adam Akers]

This is a picture from a local refinery and I am working to try to get an idea on rough year that the picture was taken based off the trucks. 

[Leif Holmberg]

The first 3 could be Diamond mid 1930s-

[58L-Y8]

Here's a better look:

The first three from the left are early 1930's Diamond T trucks.

Wonder if the numbers on the ends of the storage tanks indicate the octane rating of its contents?

Edited March 16, 2021 by 58L-Y8
Added first three from left are early 1930's Diamond T trucks. (see edit history)

[1912Staver]

Circa 1934 - 1936 ? Trucks are harder to date than cars in many cases. But they do follow the general styling trends of cars , particularly in the front end sheet metal. Cab's don't change all that much from year to year .

 

Greg

[28 Chrysler]

Fist photo could be 1935ish REOs