The book, ""Geological Reconnaissance Of Parts Of Grand, Jackson And Larimer Counties, Colorado: Annals Of The New York Academy Of Sciences, V30"" by Leslie Erskine Spock Jr. is a detailed account of a geological survey conducted in parts of Grand, Jackson, and Larimer counties in Colorado. The book is published as part of the Annals of the New York Academy of Sciences, Volume 30.The author, Leslie Erskine Spock Jr., was a renowned geologist who conducted...