Acknowledgments
Thanks to the following who e-mailed images or mailed photos:- Rich Carlson
- City U.S. 14 and City U.S. 26, Montana secondary highway
- Greg Coniglio
- Lake Huron Circle Tour
- Grant "Casey" Cooper
- U.S. 99 on the front page
- Bruce Cridlebaugh
- Pennsylvania signs
- Chris Cuomo
- Georgia Appalachian Developmental Highway sign, United Kingdom
- H.B. Elkins
- Kentucky signs, I-64, Great River Road
- Marc Fannin
- Tennessee primary sign, Red Arrow Highway in Michigan
- Carlos M. Fernández
- Puerto Rico
- Jeremy Hamm
- Saskatchewan
- Richie Kennedy
- Kansas U.S. 56, Eisenhower Interstate System, Oregon Trail, Native American route
- J. P. Kirby
- Newfoundland
- Christopher Knight
- signs from Kansas, 3-digit U.S. highway
- Jeff Leadbeater
- Puerto Rico
- Jim Lindsay
- Australia; New Zealand; Japan; California U.S. 6, U.S. 97, and U.S. 99; standard county pentagon; Oregon U.S. 30; Washington
- Taylor Lonsdale
- Vermont
- Richard C. Moeur
- Arizona loop routes, National Forest route, County route on the front page
- Dan Moraseski
- Osceola Parkway
- Ty Rogers
- Canadian signs, Old U.S. 40, Garden State Parkway, New York Thruway, 1948 signs, European signs, Florida U.S. markers, Israel
- S. M.
Sabri S. M. Ismail
- Malaysia
- Dave Schul
- Canadian signs, Kansas Turnpike, Chisholm Trail, Lewis and Clark Trail, Sante Fe Trail, signs from Colorado, Minnesota, Missouri, Nebraska, South Dakota, and Texas
- James Schul
- Ohio signs
- Brian Smith
- 1948 California sign
- Frank Solomon
- Mexico
- Bob Spoerl
- Canam Highway
- James
Sterbenz
- District of Columbia, Canadian signs, Capital Beltway, U.S. 101, Great River Road, signs from Connecticut, Delaware, Florida, Illinois, Kentucky, Maine, Missouri, New Jersey, New York, Pennsylvania, Texas, Vermont, Virginia, Wisconsin. and Ontario
- Ron Wilbanks
- I-95; Pemiscot County, Missouri; Red Arrow Highway
- Chris Bessert
- Ontario
- Bob Bannon
- 1948 state highway marker colors
- Michael T. Butler
- Ontario
- Bruce Cridlebaugh
- Pittsburgh's Belt Route System, Path of Progress, Pittsburgh's Wayfinder System
- Bob Goudreau
- Virgin Islands
- Dan Herrmann
- Virgin Islands
- Joe Isham
- Texas
- Kevin Johnson
- Related sites
- Taylor Lonsdale
- Vermont
- William Riddle
- Tennessee
- Ty Rogers
- Puerto Rico
- Dale Sanderson
- South Dakota
- Dave Schul
- 1948 state highway marker colors
- Eric Scouten
- Minnesota, District of Columbia
- Sandy Smith
- Massachusetts
- James
Sterbenz
- New Hampshire, Wyoming
- Ron Wilbanks
- Florida U.S. Highway sign colors
- Mike Wiley
- 1948 state highway marker colors
Special thanks to Wei-Hwa Huang for giving me the images with which I started.
The Sources page describes where these people got the images.
And, of course, thanks to everyone who e-mailed comments and suggestions. The response has truly been more than I ever expected. Who would think so many people would be interested in road signs?