A Ashton Member Sep 18, 2019 #1 A nice catalog of railroad supplies from 1904 https://archive.org/details/scienceofrailwa15kirk/page/n3?q=ashton+valve+steam+whistle
A nice catalog of railroad supplies from 1904 https://archive.org/details/scienceofrailwa15kirk/page/n3?q=ashton+valve+steam+whistle