The GBHA is in close communication with the state and city agencies responsible for planning the War of 1812 and Civil War commemorations. Information about both anniversaries will be shared with all members, and promotional and collaborative opportunities are being pursued. GBHA is also pursuing collaborations with Baltimore City Public Schools and other relevant organizations.

Collaborators include the following:
* All GBHA member museums
* Baltimore City Public Schools
* Baltimore Heritage, Inc.
* Baltimore National Heritage Area
* Chesapeake Bay Gateways Network
* Maryland Association of History Museums
* Maryland Historic Trust
* Preservation Maryland
* Star-Spangled 200
* Visit Baltimore