The collection of Dana A. Dorsey is comprised of the legal and financial records of his vast real estate holdings. Mortgages, leases, rental and loans agreements represent the focus of the collection. Of special interest to researchers are those documents which detail the growth of both black and white Miami, deeds which describe in detail the properties and location of what were the newly created sub-divisions in the city. In a period of racial segregation these documents show a blurring of racial lines as exemplified by Dana Dorsey business relations with the founding families of the city.