anzaniradial

The gentleman on the left is Dr. Thomas C. Young, (prominent surgeon) Glendale, California. President of the California Aeronautical Association- mid-twenties, member of the Sheriff's Aero Squadron, and owner of the then famous "Wedding Ship" (not shown) in which many a wedding was performed over L.A.in the air. The gentleman on the right, is of course, the famous aviator Jack Frye (friend of Young) the location is likely Burdett operations, Western Avenue, date 1925.

Marcel-Georges Brindejonc des Moulinais (18 February 1892 – 18 August 1916) was a French aviator who died in World War I. en.wikipedia.org/wiki/Marcel_Brindejonc_des_Moulinais

This appears to the be the Burgess Model I flying boat (not to be confused with the Burgess Model I Scout) built for Robert J. Collier. Famed aviator Frank Coffyn tested the aircraft for Collier at Marblehead, Massachusetts (dating the photo to July/August 1913). The engine is a 220 horsepower Anzani 20 radial engine, an immensely powerful engine for the era featuring two 10-cylinder rows. In fact, this particular engine (visible just behind Coffyn) may be the very first of its type built and sold by Italian motor manufacturer Anzani. www.flightglobal.com/pdfarchive/view/1913/1913%20-%200722...

en.wikipedia.org/wiki/Frank_Coffyn

Frank T. Coffyn Aero Club of America Pilot # 26 October 24,1910