Consider government information when doing your research. Government websites have useful overviews, reports, data, studies, documents, etc. Check out the Government Information and the Public Policy guides.
A federated search engine from the Government Publishing Office searches multiple US federal government databases, retrieving reports, articles, and citations while providing direct links to selected resources available online.
2018 hearing before the Subcommittee on Railroads, Pipelines, and Hazardous Materials of the Committee on Transportation and Infrastructure, House of Representatives
Comprehensive summary of statistics on the social, political, and economic conditions of the United States, from 2013 to the present. Volumes covering 1879-2012 are on the US Census site.
Committee on Transitions to Alternative Vehicles and Fuels, Board on Energy and Environmental Systems, Division on Engineering and Physical Sciences, National Research Council of the National Academies
Online library of e-books, e-periodicals, and interactive statistical databases produced by the Organisation for Economic Co-operation and Development (OECD). Browse by Theme.
Source OECD, Organization for Economic Cooperation and Development