1 ene 1930 año - Civilian Conservation Corps cultivated park
Descripción:
 During the 1930's, in the times of the Great  Depression under Franklin D. Roosevelt, the Civilian Conservation Corps  helped to cultivate the park by planting trees along the river and building shelters in the park for campsites. http://dnr.maryland.gov/centennial/Pages/Centennial-Notes/Patapsco_1stPark.aspx 
Añadido al timeline:
fecha:
1 ene 1930 año
Ahora mismo
 ~ 95 years ago