English: Mountains in the Swiss Alps (from left to right): Morgenhorn (3627m, with the summit cut off), Blüemlisalpstock, and Gspaltenhorn (3436m). View from a balloon at about 3300m above sea level.
Date
September 9, 1908; original publication in the source mentioned.
Source
Scanned from Spelterini, E.: Über den Wolken/Par dessus les nuages, Brunner & Co, Zürich 1928, p. 32.
The author died in 1931, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or less.
This work is in the public domain in the United States because it meets three requirements:
it was first published outside the United States (and not published in the U.S. within 30 days),
it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
it was in the public domain in its home country (Switzerland) on the URAA date ().
For background information, see the explanations on Non-U.S. copyrights.
The Swiss copyright on Spelterini's work's expired at the end of 1981, 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={{en|1=Mountains in the Swiss Alps (from left to right): ''Morgenhorn'' (3620m, with the summit cut off), ''Blüemlisalpstock'', and ''Gspaltenhorn'' (3427m).}} |Source=Scanned from Spelterini, E.: ''Über den Wolken/Par dessus
