The ACS Postdoctoral Fellowships provide support and mentoring for new investigators to position them for independent careers in cancer research. These are meant to broaden the applicant's research training and experience. Those who are eligible to submit a proposal are those who work at a US academic institution or eligible non-profit; are a US citizen or a non-citizen holding an appropriate visa when they submit their application; and have had their doctoral degree for less than 4 years; time spent in clinical-only training is not counted. They must not have a faculty appointment (e.g., Instructor, Research Assistant Professor). Awards are for up to 3 years. Depending on availability of special endowment funds, the ACS annually selects one or more of the top-ranked fellowships to be supplemented above the standard stipend. Fellows will also receive an allowance to help defray costs such as health insurance, workshop costs, and expenses associated with presenting at a domestic scientific meeting. Applicants must carefully select those individuals who will provide letters on their behalf. Ideally, letters will be provided by a graduate mentor, a member of a former dissertation committee, and a former research mentor. The letters should address the applicant's character, motivation, maturity, general knowledge, research and problem-solving skills, originality, any specialized experience, and training potential. Please visit the award's website or contact the American Cancer Society, Inc. for more information.