Vintage Photograph Donald Wills Douglas Sr with Dog Douglas Aircraft Aviation

Offering a vintage photograph believed to show Donald Wills Douglas Sr and his dog. Douglas was the founder of Douglas Aircraft Company. Great image! 

Sold as-found and I do not have any additional information on the age or history of this photo. Identifications of subjects are to the best of my ability but are not certain - please view images carefully before purchase. 

Each measures approximately 4 3/4" by 7 3/4"

Condition: This photo is in good condition overall with some light wear. Image has some brown toning throughout. Pen notation on the back.  

Tag PSFA24 in DS25 E1