August 1969, Maloney Concrete Truck #50, Rockville, MD

From John: Found this. It was the next slide on the roll and I assumed it was the same truck until I scanned it. This is #50.

It is not the sharpest photo in the world. The lettering is different. It appears to be the same REX model mixer as the other one. If there is any red it is covered with mud. This does not have the funnel on the back for loading that the more modern trucks have. Not sure how it was loaded but I am still searching the internet for clues.

Photo Copyright John King