Popular Mechanics Magazine "Article on 9/11"

Masonry Magazine Article "Putting Prestressed Masonry To Use"

World Trade Center Report

The Masonry Society (TMS)

American Society of Civil Engineers (ASCE)

American Institute of Steel Construction (AISC)

New York Association of Consulting Engineers (ACEC - New York)

The Business Review article featuring "David T. Biggs"

The Concrete Producer article featuring "David T. Biggs"