This article in the Sun quotes Jim Kelly, chair of GVC's History Committee.
today Baltimore County officials will celebrate the completion of a project to restore 10 buildings at Cromwell Valley Park. ... Most of the buildings dated from the 1930s, but at least one structure, a large barn, appears to have been constructed around the time of the Civil War....The oldest home, Willow Grove Farm, once belonged to prominent Baltimore banker Robert Merrick. The other farms belonged to the Sherwood and Eck families.
But there is more to be done:
The next stage of improvements include new signs and renovations to the Merrick House, a log cabin and lime house.
Cromwell Valley Park lies next to Minebank Run, a tributary of the Gunpowder.