Firsts: The Book Collector’s Magazine. March 2006. Volume 16, Number 3. An update to collecting Robert E. Howard and Robert E. Howard Checklist by Don Herron.
Firsts: The Book Collector’s Magazine. July/August 2000. Volume 10, Number 7/8. Collecting Robert E. Howard and Robert E. Howard Checklist by Don Herron. Filled with b & w photos.