Purchasing Associations

NIGP: The Institute for Public Procurement

Capitol Area Purchasing Association Chapter of NIGP

Delaware Public Purchasing Association

Maryland Public Purchasing Association

Metropolitan Washington DC Chapter of NIGP

Virginia Association of Governmental Purchasing

NIGP Chapter Web Sites


Commonwealth of Pennsylvania

Pennsylvania Department of General Services

Pennsylvania e-Marketplace Contract Search

Pennsylvania General Assembly


COSTARS Contract Search

State and Local Governments on the Net

Cooperative Purchasing Programs

H-GAC Cooperative Purchasing Program

Keystone Purchasing Network (KPN)

NASPO ValuePoint

National Cooperative Purchasing Alliance (NCPA)

National Intergovernmental Purchasing Alliance (National IPA)

Pennsylvania Education Purchasing Program (PEPPM) Technology Bidding and Purchasing Program

Sourcewell (formerly NJPA)

U.S. Communities

* Please note that the above is a small listing of the available cooperative contracts. It is up to each agency to determine whether or not they are able to use any of the listed cooperative contracts.

Other Purchasing Sites 

NASPO National Association of State Procurement Officials

ISM Institute for Supply Management

NCMA National Contract Management Association

NACo National Association of Counties

General Reference

Thomas Register

The Blue Book


Dunn & Bradstreet

Zip Code Information

ANSI American National Standards Institute

Florida Atlantic University (FAU) Public Procurement Research Center

Better Business Bureau