The chronology is a comprehensive bibliography. It contains 512 entries covering a variety of selected literature, reports, policy instruments, and significant events affecting Federal Scientific and technical INFORMATION(STI) from 1945-1990. It includes some publications and events of historic interest which relate to the evaluation of aerospace and aerospace knowledge diffusion. Each entry has been given an item number and items are arranged by columns. To provide an overview of Federal STI development, the entries are generally arranged by date of publication and event. Specific information, including the year of the event, report, or policy instrument; the author; bibliographic number; and sponsor are included. Comments regarding the major findings, recommendations, or significance have been added for each entry. The chronology has seven appendices. Appendix A is a chronology of the DTIC. Appendix B is a chronology of the NTIS. Appendix C is a chronology of NASA STI. Appendix D is an index of Executive Orders. Appendix E is an index of Public Laws. Appendix F is an index of popular common names for studies. Appendix G is a glossary of acronyms.