I have been equally intrigued by the aerial shot and the two aircraft. Considering this was just two or three years after Lindberg's Atlantic sojourn, I would imagine there was still keen interest in airplanes, which begets the question, what were the planes doing there? An advertising gimmick a la "Bob's" ? Aircraft sales? (Think '46, Eddie Meyer at Third and Vermont.
http://skyscraperpage.com/forum/show...postcount=8697 ) They certainly look small enough to have been trailered to the location, but in '29 they could have landed on many undeveloped lots nearby.
Another thing caught my eye is the square area that almost looks like an animal pen but I think it is more likely just billboards arranged in a square pattern and the area within used as a parking lot.
While looking for more information on the airplanes at or near Ingraham, I tripped over the following image of Ingraham Street looking west from Lucas Avenue. The lack of pavement certainly drives home the need to wear a "duster" when running simple errands. With all of those lovely residences, one wonders how long it took to get that street paved. Also a fine complement of hitching posts.
Would the buildings pictured have been single or multifamily dwellings?
1907 - Ingraham Street looking west from Lucas Avenue
http://waterandpower.org/DWP-LA%20Pu...Poles_1907.jpg
1907 - Lucas Ave north from Ingraham Street
http://jpg3.lapl.org/pics35/00067288.jpg
1905 - Nearby Lucas and Wilshire
http://jpg3.lapl.org/pics35/00067294.jpg