Photograph
H. Bentley Hahn Personal Papers
HBHPP-001-028-p0017
Transparency 1 of 2, "Connecticut: Typical Arrangement of Post Office Sorting Case," (slide 16 of 20) for use in a presentation by H. Bentley Hahn titled, "Technical Explanation of Post Office Department's Proposed 'Zip Code' Program for the Postal System."