Sen. Ben Cardin is making another push to create national parks in Maryland and New York dedicated to Harriet Tubman.

The Maryland Democrat says he will speak on Wednesday to advocates, historians and Tubman descendants about his efforts to move the bill toward consideration by the full Senate.

Cardin is the lead sponsor of a bill to create the Harriet Tubman Underground Railroad National Historical Park in Caroline, Dorchester and Talbot counties. The bill would also create a Harriet Tubman National Historical Park in Auburn, N.Y.

Tubman was born in Dorchester County and spent nearly 30 years there as a slave before escaping in 1849.

She later led hundreds of slaves to freedom as part of the anti-slavery resistance network known as the Underground Railroad.