Date: 1858. Author: Albert Bierstadt (1830–1902)
This image is in the public domain in the United States, where Works published prior to 1978 were copyright protected for a maximum of 75 years. See Circular 1 "COPYRIGHT BASICS" PDF from the U.S. Copyright Office. Works published before 1923 in this case 1858 are now in the public domain.
This file is also in the public domain in countries that figure copyright from the date of death of the artist (post mortem auctoris in this case Albert Bierstadt (1830–1902), and that most commonly runs for a period of 50 to 70 years from December 31 of that year.
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