Government Accountability Office (GAO/U.S. Government)
SUMMON (add "reports" or "project management" to your search; use search/document type limits)
World Bank/Documents and Reports
Worldcat (add "reports" or "project management" to your search; use search/document type limits)
OECD iLibrary
Organization for Economic Cooperation and Development (OECD) Library of publications, including articles, books, working papers, and data sets covering agriculture, development, energy, transportation, and more.
ProQuest Congressional
Publications related to or from the United State Congress and the Executive branch from 1789 to the present that include laws, legislative histories, House and Senate hearings, bills and reports, the Congressional Record, Code of Federal Regulations, Federal Register, plus Executive Orders, Proclamations and other documents related to the presidency.