Can anyone identify this 1930s Truck?

I've been curious about this photo for some time. Is this a Diamond Rio, Reo Speedwagon or...?

 

Looks like a late 1930's Diamond T and the COE is a International D300

 

Ah, Diamond T how did I not think of that! Thanks

 

Those COE Internationals were really cool trucks. One door opened to the rear, and the other was suicide.

 

See the last opening at the top of the grille insert and the bead running down the front fender, they look the same as International school bus?