| Lot Number: 434 | |
 | Date: 1919, Jan 5 Est. price: £15.00 Category: United States Internal Description: Washington to New York, correctly franked 6c, canc Washington 'Air Mail Service Wash. N. Y. Phila. Washington/Jan 5 1919', ms 'Aeroplane Mail' |
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| Lot Number: 435 | |
 | Date: 1923, Aug 21 Est. price: £15.00 Category: United States Internal Description: US Governmental Flight #162, with Night Flying between Cheyenne and Chicago, New York to Cheyenne,Wyoming, bs 22/8, plain cover franked 16c C2, winged magenta 'US Air Mail hs verso. |
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| Lot Number: 436 | |
 | Date: 1924, Jun 30 Est. price: £18.00 Category: United States Internal Description: US Governmental Flight , Philadelphia to Chicago, carried on the F/F of the Transcontinental Air Mail Route - New York to San Francisco, plain cover franked C4 8c tied Philadelphia Jun 30 postmark, ms 'First Aeroplane Trip/Philadelphia-Chicago/6/31/1924'. Faint toning and ironed vertical crease. |
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| Lot Number: 437 | |
 | Date: 1924, Jul 25 Est. price: £15.00 Category: United States Internal Description: US Governmental Flight , C6 24 c on Hotel Congress cover embossed on flap, tied Chicago, Jul 25, to Norfolk, Va, Jul 28 arrival on front, violet winged 'Via US Air Mail' hs. |
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| Lot Number: 438 | |
 | Date: 1924, Jul 25 Est. price: £15.00 Category: United States Internal Description: US Governmental Flight , C6 24 c on plain cover, tied Philadelphia, Aug 20 to Elko, Nev, ms 'Air Mail'. Flap tear. |
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| Lot Number: 439 | |
 | Date: 1925, Jan 31 Est. price: £15.00 Category: United States Internal Description: U.S. Government flown Air Mail, Pittsburgh to Los Angeles, bs Feb 1, franked 24c C3, ms 'Air Mail', |
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| Lot Number: 440 | |
 | Date: 1925, Jul 1 Est. price: £12.00 Category: United States Internal Description: U.S. Government flown Air Mail, Sacramento to Oakland, Ca, bs Jul 1, franked C4 6c, violet 'Via Air Mail' hs's. |
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| Lot Number: 441 | |
 | Date: 1925, Sep 4 Est. price: £18.00 Category: United States Internal Description: U.S. Government flown Air Mail, San Francisco to Cleveland, OH, Hotel St Francis, San Francisco corner cover franked 24c C6, bold strike 'Via Air Mail' hs. |
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| Lot Number: 442 | |
 | Date: 1928, Sep 7 Est. price: £25.00 Category: United States Internal Description: Reopening of Lands Downe Air Field, airmail cover franked 5c canc Youngstown cds, and on to Detroit 8/9, fine strike circular magenta commemorative cachet, signed by Clifford Ball. The airport was dedicated as Lansds Downe Field in late October 1926 and was named after Lieutenant Commander Zachary Lansds Downe commander of the US Navy airship USS Shenandoah. It was the first airport in Youngstown and the first in the region to see airmail service. |
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