Patrick D. Hamilton

ACA International is a leading association in the accounts receivable management industry. ACA International is based in Minneapolis, MN and has subsidiaries in the United States. The private company plays a critical role in supporting the credit-based economy.

National Association of Credit Management, Inc. provides information and related services to the business, credit, and financial industries. It promotes good laws for sound credit, protects businesses against fraudulent debtors, improves the interchange of credit information, develops credit practices and methods, and establishes a code of ethics. The company was founded in 1896 and is headquartered in Columbia, MD.

Windham Professionals, Inc. provides debt collection services. It offers education, business-to-business, and business-to-consumer services. The firm also offers revenue management solutions to a variety of industries such as education, finance and insurance, government, healthcare, transportation, telecom-cable-satellite, retail, and commercial services. The company was founded by Edward M. Sheehan, Jr. in 1982 and is headquartered in Salem, NH.