A 39 page report (w/ directory data) from the Congressional Research Service via the University of North Texas Digital Library.
Audrey Celeste Crane-Hirsch
Information Research Specialist
This list of about 150 congressional liaison offices is intended to help congressional offices in placing telephone calls and addressing correspondence to government agencies. In each case, the information was supplied by the agency itself and is current as of the date of publication. Entries are arranged alphabetically in four sections: legislative branch; judicial branch; executive branch; and agencies, boards, and commissions.
Specific telephone numbers for correspondence, publications, and fax transmissions have been provided for each applicable agency. When using fax, it is important to include the entire mailing address on a cover sheet, as many of the listed fax machines are not directly located in the liaison offices. For the convenience of the user, websites are included as well.
A number of agency listings include an e-mail address. When e-mailing agencies please remember to include your name, affiliation, phone number, and return address, to ensure a speedy response. Users should be aware that e-mail is not a confidential means of transmission.