B & O Railroad Museum issued the following announcement on July 1.
The B&O Railroad Museum is proud to be a partner of Blue Star Museums, a collaboration among the National Endowment for the Arts, Blue Star Families, the Department of Defense, and more than 1,500 museums across America to offer active military personnel and up to five family members free admission to the B&O Railroad Museum now through Sunday, September 2, 2018 with the presentation of a Geneva Convention common access card, a DD Form 1173 ID card, or a DD Form 1173-1 ID. @BlueStarFamily @NEArts #BlueStarMuseums #summerfun
Original source can be found here.
Source: B & O Railroad Museum