• Baseball, Softball (includes Little Leagues)

• 55.

Mason Dixon Approved Baseball Umpires Association Inc

MASON DIXONUMPIRES ASSOCIATION About Us Join Us Members Area More.

Pathfinders, Inc

Maryland's largest #nonprofit organization dedicated to improving the lives of individuals with #autism & the people who care for them.

• Senior Continuing Care Communities

• 57.

Ancient Free & Accepted Masons of Maryland

A CONTINUING CARE RETIREMENT COMMUNITY ESTABLISHED TO PROVIDE A LIFE-CARE RETIREMENT COMMUNITY FOR MEMBERS OF THE GRAND LODGE OF ANCIENT FREE AND ACCEPTED MASONS OF MARYLAND AND THE MEMBERS' SPOUSES.

Mid-Atlantic Hedge Fund Association

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• Golf (Country Clubs, use N50)

• 59.

Mid-Atlantic Association of Golf Course Superintendents Inc

The Mid-Atlantic GCSA is dedicated to providing value to members through programs and services that enhance our profession.

• Museums & Museum Activities

• 60.

National Electronics Museum Inc

Open for tours by Appointment Only. Visit our website to schedule.

American Board of Orofacial Pain

THE MISSION OF THE AMERICAN BOARD OF OROFACIAL PAIN (ABOP) IS TO ENHANCE THE QUALITY OF CARE AND SERVICE PROVIDED TO THE PUBLIC THROUGH CERTIFICATION OF DENTISTS IN THE FIELD OF OROFACIAL PAIN.

• Senior Citizens' Housing, Retirement Communities

• 62.

Maryland Masonic Homes Ltd

A CONTINUING CARE RETIREMENT COMMUNITY ESTABLISHED TO PROVIDE A LIFE-CARE RETIREMENT COMMUNITY FOR MEMBERS OF THE GRAND LODGE OF ANCIENT FREE AND ACCEPTED MASONS OF MARYLAND AND THE MEMBERS' SPOUSES.

• Fund Raising and/or Fund Distribution

• 63.

WARRIOR REUNION FOUNDATION

Supporting combat veterans by reconnecting - at no cost - those who served together in combat.