1) Cincinnati Time Recording Products - Altoona Office Equip., Altoona, PA

2) Wengert's Milk

3) Allen G. Boyer Grocery, Lebanon, PA

4) Nagle's Market, Harrisburg, PA

5) Sterner's Hardware, Quakertown, PA - Best Wishes Holiday Ruler

The above 5 are all 12",

6) National Legal Supply, Albany, NY

This one is 10".

Most are from the 50's or early 60's, before zip codes were used.  All are really clean for being vintage.

Each has a hole for hanging which would make a cool display of old rulers.