Significance: In the early years of the Twentieth Century Indianapolis was one of several centers in the United States where automobiles were manufactured. The Cole Motor Car Company building is a good example More
Significance: The railroad tracks are one of two features and 18 contributing buildings to the Douglas Aircraft Company Long Beach Plant historic district. Activities associated with the district significantly More
Significance: The building provided temporary storage for Sprint warhead sections and space for checkout and temporary storage of Spartan warhead sections prior to their installation on the missiles within thei More
Significance: Building 148A is associated with the twentieth century development and expansion of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number: HAER PA-74-B More
Significance: Building 322 is one of the many sheds and storehouses scattered throughout the grounds of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number: HAER P More
Significance: Building 24 is one of many small sheds and storehouses scattered throughout the grounds of Frankford Arsenal, the United States Army's principal manufacturer of small arms ammunition. Survey numb More
Significance: Building 138 is associated with the numerous small structures scattered throughout the Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number: HAER PA-7 More
Significance: Building 264 is associated with the numerous small structures scattered throughout the grounds of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number More
Significance: Building 261 is associated with the extensive infrastructure of utilities that supported the principal structures of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunit More
Significance: Two span Parker truss steel bridge across the Lehigh River and Lehigh Valley Railroad tracks. The bridge is 22 feet wide and 360 feet long with a perforated steel deck and one cantilevered sidewa More
Significance: Building 59 is associated with the expansion of Frankford Arsenal during World War II. It is one of many small storage facilities located throughout the arsenal, the U.S. Army's principal manufac More
Significance: Building 267 is associated with the continued growth of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number: HAER PA-74-BR Building/structure dates: More
Significance: Building 318 is associated with the many small structures scattered throughout the grounds of the Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number More
Significance: Buildings 254-255 are two of the many small sheds and warehouses scattered throughout the grounds of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey num More
Significance: Building 135 is associated with the numerous small structures scattered throughout the grounds of the Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey nu More
Significance: Building 117 is one of many small sheds scattered throughout the grounds of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number: HAER PA-74-AR Build More
Significance: To escape the dust and vibration harmful to precision manufacturing, Aaron Dennison moved his watch company from Boston to Waltham in 1854. It was the first civilian industry to introduce the use More
Significance: Building 265 is associated with the multitude of small structures scattered throughout the grounds of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey nu More
2013 Leicester B. Holland Prize, First Place Significance: With the exception of Gustav Lindenthal's Smithfield Street Bridge in Pittsburgh, PA, The Berlin Iron Bridge Company was the only manufacturer of lenti More
Significance: Building 203 is one of many small sheds and storehouses scattered throughout the grounds of the Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number: More
Significance: Constructed as chemical sampling rooms, Building 140 is associated with the expansion of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition, that occurred during Wo More
Significance: Greenwood Furnace was the last Huntingdon County iron furnace to go out of blast (1904). Using locally-mined iron ore, Greenwood Furnace supplied iron to its extensive roll and bar works near Lew More
Significance: The penstocks and surge tanks were built to conduct water from the intake house (HAER ND-15-D) at Lake Sakakawea to the powerhouse (HAER ND-15-A). The surge tanks primarily provide pressure relief More
Significance: Building 204 is associated with the twentieth century development and expansion of Frankford Arsenal, the U.S. Army's principal manufacturer of small arms ammunition. Survey number: HAER PA-74-BE More