La Mountain, John. Aerial reconnaissance, August 10th,: Sewells Point, Virginia. [S.l.: s.n, 1861] Map. Retrieved from the Library of Congress, (www.loc.gov/item/2006626031/).

John La Mountain, the aeronaut, has arrived from Virginia, where he has been on duty as a baloonist in General McDowell’s division for some months past.
“Personal.” New York Times. July 28, 1862: 3 col 3.
“All Sorts of Paragraphs.” Chenango America. August 7, 1862: 2 col 6.

DIVORCE.—Mrs. John La Mountain was granted a divorce fromher husband, on the ground of adultury, by a special term of the Supreme Court, on the 19th inst. mr. La Mountain, it is understood, is in Indiana.
Albany Morning Express. October 2, 1866: 1 col 4.

John La Mountain, the well-known aeronaut, has been granted a divorce from his wife Ellen, in the court of common pleas of Rensselaer.
Detroit Free Press [MI]. March 13, 1867: 3 col 2.

—John La Mountain, the aeronaut, has recently been divorced from his wife. Their union was caused by a balloon ascension she made with him. Verily, “go up like a rocket, come down like a stick.”
Weekly Republican [Plymouth, IN]. March 22, 1867: 5 col 4.

Mr. John La Mountain, the aeronaut, is busily engaged in Troy in manufacturing the great balloon with which he proposes to cross the Atlantic. The trial trip will be made in May next from Chicago, when Mr. La M. will try a thousand miles or so of lake before he attempts the ocean.
“News Items.” Hornellsville Weekly Tribune. February 11, 1869: 8 col 6.

John La Mountain (1830-1870)
St. Joseph County, Indiana
https://www.findagrave.com/memorial/171791760/john-lamountain