- Thunderbolt siren on Waterloo Road [16]
- Thunderbolt siren on Waterloo Road [15]
- Thunderbolt siren on Waterloo Road [12]
- Thunderbolt siren on Waterloo Road [11]
- Thunderbolt siren on Waterloo Road [10]
- Federal Signal Model 2 siren at Verona Fire Department [03]
- Federal Signal Model 2 siren at Verona Fire Department [02]
- Federal Signal Model 2 siren at Verona Fire Department [01]
- Siren at Waynesboro Fire Department [01]
- Siren at Waynesboro Fire Department [04]
- Siren at Waynesboro Fire Department [03]
- Siren at Waynesboro Fire Department [02]
- Siren on Eastwick Library in Philadelphia [01]
- Siren on Eastwick Library in Philadelphia [02]
- Siren on Eastwick Library in Philadelphia [03]
- Siren on Eastwick Library in Philadelphia [04]
- Siren on Eastwick Library in Philadelphia [05]
- Federal Signal Modulator in Atlantic City [01]
- Terrapin crossing sign
- Federal Signal Modulator in Atlantic City [02]
- Federal Signal Modulator in Atlantic City [03]
- Federal Signal Modulator in Atlantic City [04]
- "Legal Mask Disclaimer" sign at Zumiez [01]
- "Legal Mask Disclaimer" sign at Zumiez [02]
- "Legal Mask Disclaimer" sign at Zumiez [03]
- Siren at Warrenton Volunteer Fire Company
- Siren at Stuarts Draft Volunteer Fire Department [03]
- Siren at Stuarts Draft Volunteer Fire Department [01]
- Siren at Stuarts Draft Volunteer Fire Department [02]
- Federal Signal Model 5 siren in Lucketts, Virginia [01]
- Allertor siren in Lucketts, Virginia [02]
- Allertor siren in Lucketts, Virginia [01]
- Allertor siren in Lucketts, Virginia [03]
- Federal Signal Model 5 siren in Lucketts, Virginia [02]
- Siren at United Steam Fire Engine Company #3
- "Caution: Uncompleted road not publicly maintained" [02]
- "Caution: Uncompleted road not publicly maintained" [01]
- AT&T Long Lines tower in Dumfries, Virginia [32]
- AT&T Long Lines tower in Dumfries, Virginia [31]
- Siren at Fairfield Fire & EMS [01]
- Siren at Fairfield Fire & EMS [02]
- Sirens at Gaithersburg Fire Museum
- Flood warning system in downtown Ellicott City [02]
- Flood warning system in downtown Ellicott City [03]
- Flood warning system in downtown Ellicott City [01]
- Railroad signal with button copy [04]
- Railroad signal with button copy [03]
- Railroad signal with button copy [02]
- Railroad signal with button copy [01]
- City of Petersburg sticker on stop sign
- Belfast Fire Department siren [01]
- Siren at Calypso Volunteer Fire Department [02]
- Siren at Calypso Volunteer Fire Department [01]
- W.S. Darley Model 2 siren at Rosewood Fire Department [01]
- Belfast Fire Department siren [02]
- W.S. Darley Model 2 siren at Rosewood Fire Department [02]
- W.S. Darley Model 2 siren at Rosewood Fire Department [03]
- Siren at El-Roy Volunteer Fire Department
- Siren at Wyse Fork Volunteer Fire Department
- Water tower with siren in Emporia, Virginia [01]
- Darley Model 5 siren in Gaston, North Carolina
- Woomy on top of a siren
- Fedelcode Model 20 in Halifax, North Carolina
- Farm equipment sign on I-795 [01]
- Farm equipment sign on I-795 [02]
- Water tower with siren in Emporia, Virginia [02]
- Water tower with siren in Emporia, Virginia [03]
- Siren at 1300 West Broad Street [01]
- Siren at 1300 West Broad Street [02]
- ACA P-15 siren in Mechanicsburg, Pennsylvania [01]
- ACA P-15 siren in Mechanicsburg, Pennsylvania [02]
- ACA P-15 siren in Mechanicsburg, Pennsylvania [03]
- Siren at Selma Fire Department [01]
- Siren at Selma Fire Department [02]
- Warning on the side of a railcar
- Ball fields ahead
- Fedelcode Model 5 in Chambersburg, Pennsylvania
- Siren at Selma Fire Department [03]
- Siren at Selma Fire Department [04]
- Siren at Selma Fire Department [05]