Thank you for your interest in the American Planning History Timeline. Please complete the form to recommend an ‘event’ that has national significance and led to a definite change in how planning is done, or the first of its kind. Recommendations may include: the publication or a book or impactful journal article; publication or formal adoption of a plan; a formal gathering; initiation or completion of a change to the built environment; initiation of a formal agreement; invention, adoption, launch or first application of a tool or technique; adoption/repeal of a law; creation of an organization or formal program; court decision; natural or manmade disaster; conference of an award, certification, honor or degree. For individuals, the recommendation should focus on the individual’s contribution or accomplishment to the planning profession.