found: His Whistle down the valley, c1991:t.p. (Kurt E. Armbruster)
found: Orange cars west, 2018:(Kurt E. Armbruster) p. 5 (b. 1951; Kurt Einar Armbruster; historian, musician, rail enthusiast; author: Whistle down the valley; Orphan road; lives in Seattle)
found: Wikipedia, April 12, 2024:Kurt E. Armbruster (Kurt E. Armbruster; Kurt Einar Armbruster; historian and author from Seattle, Washington; also a musician and songwriter with 2 albums released under the name Einar: Spookyjuice (2012) and One good ride (2019); lives in Seattle)
found: U.S. Copyright Office database, April 12, 2024:copyright registration for Spookyjuice and for Orphan road (Armbruster, Kurt E., 1951- )