This occasional paper describes the National Council for History Education's program of professional development for history teachers along with the principles that were used to institute the program. The manual is intended as a guide for educators to establish their own history colloquium programs. The 10 sections are: (1) "Introduction"; (2) "The Colloquium Philosophy: A Way of Thinking About History and Teaching"; (3) "Planning the Kind of Inservice Experience We Always Wanted"; (4) "Choosing the Team"; (5) "Content: What Do We Do For Three Days?"; (6) "Logistics Are Important"; (7) "'It's A Great Idea, But We Don't Have Any Money.' Some thoughts on Costs and Fundraising"; (8) "A Colloquium of Your Own"; (9) "Personnel, Materials and Resources"; and (10) "Table of Contents for Appendixes." Twenty-two appendixes include sample letters, posters, forms, and checklists. (EH) Appendices." (EH)