Boeing's Model 314-A Clipper was the culmination of a series of PanAm Clipper flying-boat international transports. They turned out to be the final word in flying-boat transports, since the range and capacity of land-based planes, with their inherently greater flexibility in destinations, had grown so dramatically during the course of World War II. The Martin JRM Mars and Consolidated PB2Y Coronado planes had some success as cargo carriers for the US Navy but were never picked up as passenger transports.
Generically named in honor of the British tea clippers, fastest sea transport of their times, the Clippers, both the Boeing planes and their predecessors, offered rapid, luxurious overseas transport in the years before and during World War II.
- "Flying the Atlantic" [ HTML ] describes Pan American Airways' methods and processes in developing the Transatlantic Clipper service, including a detailed listing of the flight crew positions and duties.
- "Rebuilding the Clippers" [ HTML ] describes the process used by Pan American Airways to rebuild their Clipper fleet after several years of hard service.
- "Aviation's Sketchbook of Design Detail" for August, 1940, includes a drawing of a main wing spar, showing the truss-type construction.
- A Kollsman Aircraft Instruments ad, "It's a Long Way to Singapore", shows a Clipper landing on water, seen from o'clock, over a schematic route map of the transpacific service to Singapore.
- A two-page Cuno Engineering Corp (fluid filters) ad, "Cuno Girdles the Globe with Pan-American", shows a Clipper in flight, seen from 2 o'clock, and a (speculative) map of the around-the-world flight.
- A Bendix Radio ad, "
On All British Airways Boeing Flying Boats
Bendix Radio", features 4 detail photos: two showing the "football" and "ring" Radio Direction Finder antennas, the radio operator's position, and the transmitter installation.
- A Grumman Aircraft Engineering Corp ad, "Little sister ship", shows a Grumman Widgeon on a dock in the foreground with a Clipper on the water in the background. Shot was taken at the marine terminal at La Guardia Field. Both planes viewed from 11 o'clock.
The photo looks to have been taken with a very long lens, exaggerating the size difference between the planes.
- A Solar Aircraft Co (exhaust systems) ad, one of the "Famous Planes Solar Equipped" series, shows a Clipper taking off, apparently from Elliot Bay, Seattle, seen from 11 o'clock.
- A Formica ad, "Pan American Clippers fly with Formica pulleys", has a small photo of a Clipper on the water and two detail photos of control lines routed with Formica pulleys.
- A Pesco (division of Borg-Warner; pumps) ad in their "Performance Controls the Air" series features a color painting of a Clipper taking off in a South Pacific location (PT boat in the background.) Viewpoint is from 11 o'clock.
- A Valspar (paint) ad, "Pegasus was a piker!", has a photo of a Clipper (PanAm logo, nose marking "No 20") taking off, seen from 11 o'clock, and an inset of a worker painting the lower forward hull of a Clipper.
- A Cuno Engineering Corp (fluid filters) ad, "Helps detect engine trouble", shows a Clipper taking off, seen from 10 o'clock high, with a diagram of the heating system.
- A BF Goodrich "Airline of the Month" ad, "Pan American Airways", features a color painting of a Clipper on final approach to landing, seen from 10 o'clock.
- A Boeing ad, "World's Ferry", shows a Clipper taking off from water. View is from 11 o'clock.
- A news clip with photo shows the flight engineer's station.
- A Michigan Seamless Tube Co ad, "On Global Airlines", includes a Clipper taking off, seen from 11 o'clock, a view of the flight deck, looking aft, and a detail photo of hull structure and plumbing.
- "Aviation's Sketchbook of Design Detail" for November, 1944, shows details of construction of hull truss members.
- A news clip with photo shows the flight deck of a Clipper.