Perry ChecklistUnited States stamp booklet research

A continuing record of discovery

The details
tell the story.

The booklet research of Michael O. Perry

Plate positions. Printing marks. Production varieties and errors. The Perry Checklist brings together the small distinctions that reveal how United States stamp booklets were made.

We’re preparing a new digital home for this work, with a maintainable catalog and room for future discoveries.

The new website is in preparation
Booklets & panesPlate positionsProduction varietiesPrinting errors