I am making good progress on my N & P resources bibliography and have been able to purchase quite a few of the books and auction catalogues on it.
The book continuing to elude me is
U.S. Newspaper & Periodical Stamps: A Compilation of Articles from the Past by Richard Clyde Whitesell. Here is a Google on it:
https://books.google.com/books/abou...QprXGwAACAAJAny tips leading me to a copy or even more information on this volume much appreciated!