The following information was submitted by Paul G. Stein:
Casimir Clayton Griswold was born in Delaware, Ohio in 1834, son of a newspaper publisher. Griswold began his career as an engraver and illustrator, but by the late 1850s was exhibiting landscape paintings at the National Academy of Design. He became an Academician in 1867 and maintained a studio at the Tenth Street Studio Building in New York City in 1869-1870, placing him in the periphery of the circle of artists who would later become known as the Hudson River School. His landscape subjects during the 1850s and 1860s included views around Newport, Rhode Island as well as pastoral scenes of the northeastern U.S.
Griswold lived in Rome from the 1870s through the 1880s, and his submissions to the Academy exhibitions and Artist Fund sales during this time were mostly Italian landscapes. In Rome he associated with expatriate American artist Elihu Vedder.
By the early 1890s Griswold had returned to New York, where from 1892-1893 he once again rented a studio at Tenth Street. He served on the selection committee of the 76th National Academy of Design Annual Exhibition in 1901, and continued to exhibit at least occasionally through the early 1900s. He died in Poughkeepsie, New York in 1918.
Blaugrund, Annette. "The Tenth Street Studio Building: A Roster, 1857-1895." American Art Journal 14.2 (1982): 64-71.
Meggitt, Brian L., et al. Artists in Ohio, 1787-1900: A Biographical Dictionary. Kent, Ohio: Kent State University Press, 2000.
"The Artists Fund; Sale of Pictures for the Artists’ Charitable Association." The New York Times 12 Feb 1880.
"The Artists Fund." The New York Times 4 Jan 1885.
"The Autumn Academy." The New York Times 21 Nov 1890.
Levy, Florence N., ed. American Art Annual, 1898. London: Macmillan Co, 1899.
Levy, Florence N., ed. American Art Annual, 1900-1901. Boston: Noyes, Platt & Co, 1900.
Soria, Regina. "Mark Twain and Vedder's Medusa." American Quarterly 16.4 (1964): 602-606.