It appears to be a Douglas BT-2B. Here is an example for comparison:

Douglas BT-2B http://1.bp.blogspot.com/-zEjMcBOL-hg/UOXWeBviF6I/AAAAAAAAT1k/ghPCKz4QUVE/s640/Douglas%20BT-2B.jpg

The BT-2B was the first production model of the trainer version of the Douglas O-2.

The specific plane in your picture is USAAC serial number 31-35. You can see the "35" printed on the tail.

Here is what Joe Baugher's USAF Aircraft Serial Number list has to say about this plane:

35 w/o at Bolling Field, DC Feb 28, 1934

This means that the plane was written off (as unrepairable) at Bolling Field in Washington D.C. on February 28, 1934.

It's possible, as pointed out in the comments, that the serial number is actually 31-85, as the tail number is a little blurry. That airframe was written off at Randolph Field, TX on 9/15/1932. Source

It appears to be a Douglas BT-2B. Here is an example for comparison:

The BT-2B was the first production model of the trainer version of the Douglas O-2.

The specific plane in your picture is USAAC serial number 31-35. You can see the "35" printed on the tail.

Here is what Joe Baugher's USAF Aircraft Serial Number list has to say about this plane:

35 w/o at Bolling Field, DC Feb 28, 1934

This means that the plane was written off (as unrepairable) at Bolling Field in Washington D.C. on February 28, 1934.

It's possible, as pointed out in the comments, that the serial number is actually 31-85, as the tail number is a little blurry. That airframe was written off at Randolph Field, TX on 9/15/1932. Source

It appears to be a Douglas BT-2B. Here is an example for comparison:

Douglas BT-2B http://1.bp.blogspot.com/-zEjMcBOL-hg/UOXWeBviF6I/AAAAAAAAT1k/ghPCKz4QUVE/s640/Douglas%20BT-2B.jpg

The BT-2B was the first production model of the trainer version of the Douglas O-2.

The specific plane in your picture is USAAC serial number 31-35. You can see the "35" printed on the tail.

Here is what Joe Baugher's USAF Aircraft Serial Number list has to say about this plane:

35 w/o at Bolling Field, DC Feb 28, 1934

This means that the plane was written off (as unrepairable) at Bolling Field in Washington D.C. on February 28, 1934.

It appears to be a Douglas BT-2B. Here is an example for comparison:

Douglas BT-2B http://1.bp.blogspot.com/-zEjMcBOL-hg/UOXWeBviF6I/AAAAAAAAT1k/ghPCKz4QUVE/s640/Douglas%20BT-2B.jpg

The BT-2B was the first production model of the trainer version of the Douglas O-2.

The specific plane in your picture is USAAC serial number 31-35. You can see the "35" printed on the tail.

Here is what Joe Baugher's USAF Aircraft Serial Number list has to say about this plane:

35 w/o at Bolling Field, DC Feb 28, 1934

This means that the plane was written off (as unrepairable) at Bolling Field in Washington D.C. on February 28, 1934.

It's possible, as pointed out in the comments, that the serial number is actually 31-85, as the tail number is a little blurry. That airframe was written off at Randolph Field, TX on 9/15/1932. Source