First delivered to American Airlines as NC25629 "Flagship Kingsport" in July 1940, it served until 1949. It then briefly flew for Capitol Airways Inc. before passing to Ozark Air Lines Inc. who in 1957 re-registered it N137D. Retired by Ozark in 1967 it then passed through the hands of a number of corporate owners, including Air Exec (short for Air Executive Co.). This Ontario, CA based company, founded by James Webb and Russell Meek, was operational in the early 1970s. The aircraft was officially re-registered N29MA in December 1979, but that registration was never applied. It remained stored at Chino as N137D, which was still visible on the left-hand side of the fuselage at the time of this photo.

Sold to Col.George Burling Jarrett for $100 in 1931 and while on display with the Jarrett Collection, its data plate was stolen. Sold to Frank Tallman 1950 and made airworthy 1955, when it acquired its c/n.'3'. When the Tallmantz assets were sold in 1966, it went to the Aeroflex Collection in New York. By 1973 it was displayed as B7270 in Wings & Wheels at Santee, South Carolina, moving to Florida in 1979 for display with the Wings & Wheels Museum in Orlando, when Wings & Wheels merged with Aeroflex and Dolph Overton III collections. Its true identity is not now known.

Built 1930. Cancelled from the USCAR 29 July 2013.

Built 1932. When the Taylor Aircraft Company went bankrupt, its assets were bought by Piper, who developed the E-2 into the Piper J-2 and later J-3 series of Cubs. N12664 was cancelled from the USCAR 30 January 2013.

Built 1940. Displayed behind it is Douglas DC-2 NC39165 of General Airlines.

When the Wings and Wheels Museum closed in December 1981, it was sold at auction and acquired by the Science Museum. After the trans-Atlantic ferry-flight 29-30 July 1982, it was flown into the Science Museum's out-station at Wroughton on 3 August 1982.

Built 1929. Cancelled from the USCAR -8 May 2013.

Built 1929.

Built 1918.

Built 1941.

Delivered to United in July 1953 as N37568 "Mainliner Des Moines", it served until October 1968 when it had flown 32,296 hours. In December 1971 it was acquired by the Fairbanks-based Aero Retardant Inc. who converted it as a fire bomber, becoming Tanker 52 / D2. The following year it was transferred to the sister company Pacific Alaska Airlines, and operated until 1980 when it was sold to B&D Aircraft Inc. for parting out. After lingering at on at Chino for many years it was finally broken up c.1990, the nose section being noted at The Aviation Warehouse at El Mirage, CA. in October 1992.

The aircraft's original military serial was 42-16959. It came on to the US register in April 1984 as N46CM and has since been restored in WWII military colours, but retains the R-985 engine. Despite having an owner with a Northern California address, online photos suggest it is still Chino based, and it was recently tracked flying out of John Wayne Airport in nearby Orange County.

At the time of the photo it had been leased to The Doobie Brothers rock band and painted in a similar livery to their other M404s N467M and N3711K, but the registration harks back to the time it was operated for the country music band Danny Davis and the Nashville Brass. It was withdrawn from use in 1984 and donated to the George T. Baker Aviation School at Miami as an instructional airframe.

For sure one of the finest airliners ever built.

Used to carry the road crew, musical instruments and sound equipment of The Doobie Brothers Band when they were out on tour. The band themselves travelled in their small fleet of Martin 404s which were dubbed "Doobie Liners", hence this aircraft being dubbed "Crewbie Liner".

Scrapped at Hemet-Ryan c.1989. This registration is now carried by a USDA OV-10A Bronco.

EC2/12 aircraft at its home base. Later converted to F1CT.