How Do I Make a Sample Bio Letter? | Career Trend A sample bio (biography) letter can come in handy when applying for a new job, promotion or position on a board or committee. A sample bio letter should contain information about various aspects of your personal and professional career and can be adjusted depending on the need. Sample Biography - 7+ Documents in PDF, Word 7+ Biography Samples A biography is a written document of a person where in a series of life events are mentioned that is achieved by the person. The document compromises of name, photo, and details of the failures and achievements of the particular person.