2021 – Lehigh Valley, Pennsylvania (49th)

49th Annual Conference

August 23 – 27, 2021 – Lehigh Valley, Pennsylvania



An Embarrassment of Bridges
Hill to Hill Bridge 
Northampton Street Bridge 
Central Railroad of New Jersey and   bridges over the Delaware River, as well as a covered bridge, stone Delaware River bridges
Walnut Street Bridge 
ATLSS Engineering Research Center at Lehigh University

An Embarrassment of Slate 
Blue Mountain Antique Gas & Steam Engine
Bangor Quarry Hoist
Slate Belt Heritage Center
Penn Big Bed Slate Company 

Moravian Industrial Quarter

An Embarrassment of Museums
Sigal Museum 
Hoover Mason Trestle
National Museum of Industrial History

Eckley Miners’ Village
Lehigh Anthracite Coal
Number 9 mine and museum 

Go East Tour
Bethlehem Steel sites
New York, Susquehanna, and Western Railway Technical & Historical Society
Phillipsburg Railroad Historians
People’s Water Company pump house

A Day Set in Cement
Saylor Kilns Park in Coplay
LaFarge Holcim 
Atlas Memorial Cement Museum
Swope and Bartholomew fabricating shop
Bridesburg Foundry

An Embarrassment of Canals 
Port Warren Park/Morris Canal
Jim and Mary Lee Museum 
Plane 9 West
Bread Lock Park and Museum 
National Canal Museum
Freemansburg Canal Education Center 

An Embarrassment of Iron Furnaces 
Warwick Furnace
Hopewell Furnace
Joanna Furnace
Lock Ridge Furnace

Historic Bethlehem Walking Tour