This small building is #22. I have not been able to figure out it's purpose or location yet. I have found a small building with this designation up on Industrial Ave. at the north-end of factory #16. The billboard partially visible at the left mentions prosperity and is for a local bank. Those are 1920's automobiles shown at the right. The date at the lower right appears to be 1-15-36 when you enlarge. This photo is from the Buick Research Gallery in Flint, Michigan. You really need to enlarge these photos for detail.