Scott A. Ensminger has a special interest in caves and waterfalls. He has authored books and articles about both subjects. In 1987 the Niagara County Historical Society published his book "The Caves of Niagara County, New York". He is a contributor to the book "Our Romantic Niagara --- A Geological History of the River and Falls," published in 1988 by The Niagara Falls Heritage Foundation (Canada). In 1991 Mr. Ensminger initiated the Western New York Waterfall Survey. Its purpose is to catalog all of the waterfalls found in the western half of New York State. As of November 29, 2016 the total of known waterfalls was 1,120. Also in 1991 he published "A Waterfall Guide to Letchworth State Park," which was co-authored with park naturalist Douglas K. Bassett. A second edition of the Guide was published in 1996 by the Glen Iris Inn, which is located in the park. The third edition was published by him in 2016.