Below are links to featured articles that focus on research of specific issues.
BF3/BF4 – Are Some BF3 Issues Really BF4 Pennants In Disguise?
F50 Sweetman – New Insight into 1928 F50 Sweetman Card Set and Company
R314 and V352 Goudey Wide Pens in need of Proper Classification?
W552 Strip Cards – Various W552 Mayfair Novelty Print Variances
1917 Youth’s Companion Stamps Babe Ruth or Rube Marquard?