What is a White Paper?
List of government resources: https://onesearch.library.utoronto.ca/government-information
Canada:
Canadian Research Index - The major index for Canadian federal, provincial and territorial government publications. Canadian Research Index allows users to identify Canadian government information for business and research, or for informed and active participation in community activities. The database has a browse feature for subjects, company name, collections, and series title, in addition to searching by report number and Microlog microfiche number. Searches can be limited to bibliographies, illustrations and maps.
Public Policy: Key Government Resources Research Guide - Lists important resources both outside and within Canada.
Canadian Government Publications Research Guide
United States:
FedSys - US Government Printing Office Catalog.
Congress Collection - Policy Papers available through U of T