Arny published nine books between 1950 and 1972. Her second book,
Seasoned with Salt, discusses her family life and the history of their house at 149 Watchung Avenue. Known as the Garrabrandt House, its first owners were Nicholas and Mary Garrabrandt. They built the stone house in Speertown (now the community of
Upper Montclair) in 1723. While authoring books, Arny also wrote articles for multiple local newspapers in the
New York City metropolitan area. She penned articles for
The Montclair Times',
The Cedar Grove Times, and
The Westchester News between 1940 and 1960. In 1966, the New Jersey Association of Teachers of English awarded her their Authors Award for
Red Lion Rampant: An Informal History of Essex County, New Jersey.
St. Edward's University in
Austin, Texas awarded her their Coronet Award in 1964. ==Congressional hearing on trapping devices==