In the article “Stamp Announcement 11-31: Pioneers of American Industrial Design Stamps,” in Postal Bulletin 22311 (5-19-11, pages 53-54), the technical details for the Designer and Typographer were listed incorrectly.
The corrected technical details for Pioneers of American Industrial Design stamps, pane of 12, are shown here:
Designer:
Margaret Bauer
Typographer:
— Stamp Services, Marketing, 4-18-24
