| The Thomas Register |
A searchable catalog of equipment manufacturers. |
| R. S. Means |
Source of construction estimating information. |
| US Army
Corps of Engineers |
Construction Specifications, design guidance, Metric specifications. |
| NEPA Call-in |
GSA's resource site for National Environmental Policy Act (NEPA) and
National Historic Preservation Act (NHPA). |
| CABO/BOCA |
Links to National Building Code sites. |