https://www.kartonmodellbau.org/cgi-bin/bogen.pl?showentrya=681-Richard%20Wetzel
Arbeitskreis Geschichte des Kartonmodellbaus (AGK) e.V. - 28 Card models designed by Richard Wetzel
Arbeitskreis Geschichte des Kartonmodellbaus (AGK) e.V. - A German association that researches the history of card modeling including publishers, designers and...
e vdesigned byrichard wetzelarbeitskreisgeschichte
https://www.clarkehistoricallibrary.org/2016/06/wetzel-author-richard-feleming-speaking.html
Clarke Historical Library News and Notes: Wetzel Author Richard Fleming Speaking June 8
A blog from the Clarke Historical Library at Central Michigan University
clarke historical librarynews and notesrichard flemingwetzelauthor