Ouagadougu (Upper Volta, now Burkina Faso) in late December 1930 or early January 1931. Air photo taken by Swiss pilot and photographer Walter Mittelholzer (1894-1937).
日付
1930/1931 (creation), 1932 (publication)
原典
Own scan from book "Tschadseeflug" by Walter Mittelholzer, published in 1932 in Switzerland (publisher: "Verlag Schweizer Aero-Revue" in Zürich).
背景情報についてはアメリカ合衆国以外の国と地域で公表された著作物の著作権についてをご覧ください。 The Swiss copyright on Mittelholzer's work's expired at the end of 1987, since Switzerland had a copyright term of 50 years p.m.a. until 1993, and the extension to 70 years p.m.a. made in 1993 did not restore already expired copyrights.
{{Information |Description=Ouagadougu (Upper Volta, now Burkina Faso) in late December 1930 or early January 1931. Air photo taken by Swiss pilot and photographer Walter Mittelholzer (1894-1937). |Source=Book "Tschadseeflug" (1932) by Walter Mittelholzer