Some observations about this
photograph...
This is an interesting picture to try to
date. The airplane in the photo does not look like one of the
original four DH-4s (#s 109, 110, 111, 112)
that CAM-2 started out with in April 1926. Notice the landing
lights installed on the top
of the bottom wing, just outside of the outer wing struts. Also,
notice the lengthened exhaust stacks and darkened windscreen on this
later Robertson DH-4. The presence of a government issued
registration number on the tail (see listing at Aerofiles web site)
would date the picture as after March 1927, when numbers were first
issued. Additionally, judging by the fact that there are eleven
Ryan B-1 Broughams in the registration list ahead of this DH-4, and
that
Ryan B-1s did not leave the Ryan factory until the summer of 1927, and
that
there is snow on the ground in the picture, I would say this photo was
probably taken in late 1927 or early 1928.
