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Dr. Tom Callahan on Twitter: "Quote of the Day: In all science, error precedes the truth, and it is better it should go first than last. Hugh Walpole #wiersma #bio"
SUEZ Water New York - #ThankATeacher Here's a shout out to Pelham School District, Dr. Tom Callahan, director of math and science, and John Sebalos, director of technology. Learn about innovative programs
![Ted Jaleta on Twitter: "Congratulations to Ann Thomas Callahan honorary degree recipient at the U of R Convocation. Ann is an inspiration http://t.co/Q6xk0o0wfs" / Twitter Ted Jaleta on Twitter: "Congratulations to Ann Thomas Callahan honorary degree recipient at the U of R Convocation. Ann is an inspiration http://t.co/Q6xk0o0wfs" / Twitter](https://pbs.twimg.com/media/CGxgxWqUgAAfihr.jpg)
Ted Jaleta on Twitter: "Congratulations to Ann Thomas Callahan honorary degree recipient at the U of R Convocation. Ann is an inspiration http://t.co/Q6xk0o0wfs" / Twitter
![Donlen President Tom Callahan Elected Into Fleet Hall of Fame - Fleet Management WeeklyFleet Management Weekly Donlen President Tom Callahan Elected Into Fleet Hall of Fame - Fleet Management WeeklyFleet Management Weekly](https://www.fleetmanagementweekly.com/wp-content/uploads/2020/09/Tom-Callahan-Headshot-002-679x675.jpg)
Donlen President Tom Callahan Elected Into Fleet Hall of Fame - Fleet Management WeeklyFleet Management Weekly
![Stream The Tennessean's Nick Cole joins The Tom Callahan Show, 8-4-14 by thegamenashville.com | Listen online for free on SoundCloud Stream The Tennessean's Nick Cole joins The Tom Callahan Show, 8-4-14 by thegamenashville.com | Listen online for free on SoundCloud](https://i1.sndcdn.com/artworks-000087126675-dgew6w-t500x500.jpg)