Fundraisers for a planned Army museum are courting major defense contractors as part of a $200 million donation drive.

The approximately 90-acre National Museum of the U.S. Army, now in early design stages, would occupy a yet-undesignated part of Fort Belvoir. The Army Historical Foundation has raised $12 million for the project in the past 14 months, and plans to raise another $20 million by year’s end, said foundation spokesman Dave Fabian, a retired colonel.