Scopus by Elsevier –Scopus is the largest abstract and citation database of peer-reviewed literature: scientific journals, books and conference proceedings.
CIAO (International Affairs) – Columbia International Affairs Online -- a collection of reports, conferences, journals and other publications from think tanks and international associations plus selected books on international affairs
CQ Researcher – weekly reports on "hot topics" from Congressional Quarterly, Inc. This is not scholarly publishing, but informative nevertheless.
PolicyMap – Online data and mapping application; includes data on real estate. Basic search for free; subscription available.
ProQuest Social Sciences Premium Collection -- Super, interdisciplinary search of numerous databases such as PAIS, Worldwide Political Science Abstracts, Social Services Abstracts, ProQuest Criminal Justice, and many more. You can place exact phrases in quotation marks, such as "public management" or "civic engagement".
Tranweb: Transportation Article File -- Produced by the transportation librarians at Northwestern; free.
TRID: the TRIS and ITRD Database -- Free. "Covers all modes and disciplines of transportation" -- from the website. Transportation Research Thesaurus standardizes terms for TRID searching.
Compendex (Engineering Village) -- Engineering Village allows the searching of three resources for engineers: Compendex, Inspec, and the National Technical Information Service (NTIS) database. Good information about the technical aspects of highways, bridges, mass transit, maritime transportation, and the like.