This publication is a guide for legislators and their aides to help them gain the environmental information they seek quickly and efficiently. The three sections of this publication are: (1) Non-Documentary Sources; (2) Secondary Literature; and (3) Primary Literature. These sections are arranged by the categories of information sources that are of greatest use to elected officials and their staffs. Each section not only gives the names and addresses of information sources (experts, agencies, libraries, references, journals, etc.), but also advice on how to use these sources efficiently. Often the quickest way of getting needed information is to ask somebody who knows, and the first section attempts to guide the user to those people. The second section attempts to guide the user to those secondary sources - encyclopedias, bibliographies, indexes, computer search services - which can lead to the most useful primary literature. The third section guides the user to the reports, journals, legislation, and texts which often provide technical information on environmental issues. The EPA preview of environmental programs for which state and local governments have implementation responsibility is appended. (MR)