1911, Sep. 23-Oct. 1, Garden
City-Mineola N.Y. (AAMC 3). 1c Green tied by Sep. 23 (First Day) flight
cancel on photo postcard showing plane on ground, "Aerial Special Despatch"
hs cachet, to the Waldorf Astoria, N.Y.C., Extremely Fine (Image) 
1911, Sep. 23-Oct. 1, Garden
City-Mineola, N.Y. (AAMC 3). 2c Carmine tied by two strikes of Sep. 23
(First Day) flight cancel to Cantonment Fla., signed "Earle Ovington,
First U.S. Air Mail Pilot" and "With pleasure, Wm. H. Taft April
28th, 1926", usual handstamp cachet, Extremely Fine cover and
signatures (Image) 
1911, Oct. 4-8, St. Louis Mo.
Aviation Meet, Hydroplane (AAMC 5d). Bold cancel on locally addressed
1c Red Postal Card (UX23), Extremely Fine, superb in every respect, AAMC
states less than fifteen known (Image) 
1911, Oct. 4-8, St. Louis Mo.
Aviation Meet, Hydroplane (AAMC 5d). 2c Carmine tied by "St. Louis Mo.
Oct. 6 1:30 PM 1911" machine cancel and flight cancel on locally addressed
postcard, card with rounded corners and picture side with small faults,
otherwise Fine (Image) 
1911, Oct. 17-20, Minneapolis
Minn.-Rock Island Ill., Mississippi River Flight (AAMC 6). 2c Carmine
(375), defective, tied by "Minneapolis Minn. Oct. 12 4:00 PM 1911" machine
cancel on cover with bank's printed corner card to LaCross Wis., ms.
"Care of Aviator Robinson Hydro-Aeroplane Route" at lower left,
accompanied by 1933 newspaper article about the flight, cover opened
roughly at right clear of stamp, otherwise Fine, with 1982 P.F.
certificate, AAMC states of the 600-800 reportedly flown, less than ten are
known (Image) 
1911, Oct. 17-20, Minneapolis
Minn.-Rock Island Ill. Mississippi River Flight (AAMC 6b). 2c Carmine,
s.e. at left, tied by "Minneapolis, Minn. Oct. 11 6:30PM" machine cancel on
cover to Red Wing Minn., with violet "Delivered by Hyro-Areo Plane Route
From Winona" two-line handstamp and ms. "c/o Hugh Robinson Hydro
Aeroplane Route" at lower left, cover with rounded corners, otherwise
Fine, the pilot, Hugh Robinson, was scheduled to stop in Red Wing, but he
missed the stop either due to poor weather or simple pilot error and landed
in Winona. Mail was sent by truck from Red Wing to Winona to make the
plane. Of the 600-800 pieces reportedly flown, less than ten are known,
with 2001 A.P.S. certificate (Image) 
1911, Oct. 17-20, Minneapolis
Minn.-Rock Island Ill. Mississippi River Flight (AAMC 6c). 1c Green
tied by "La Crosse Wis. Oct. 13 12:00 PM 1911" machine cancel on photo
postcard depicting Pilot Hugh Robinson in his hydroplane, addressed to
Winona Minn., Extremely Fine, less than ten known
(Image) 
1911, Nov. 3-5, Louisville,
Kentucky. Aero Military Tournament (AAMC 8). 1c Green tied by
well-struck special tournament cancel on postcard to Louisville
Ky.VERY FINE AND CHOICE EXAMPLE OF THIS SCARCE PIONEER FLIGHT.
While dated Nov. 4th, this cover was flown on Nov. 5 because there were no flights on the 4th. AAMC states "very few known" (Image)