The Pfeiffer's Schoolhouse was first placed on the Endangered List in 2001. Pfeiffer's Corner was a rural area bounded by Ellicott City, Waterloo, and Elkridge. The schoolhouse was built c.1895, and possibly much earlier.

In 1988, a seventh-grade class from Hammond Middle School raised $16,500 to temporarily move the schoolhouse to Clarksville.

An architectural study, which determined the original plan, was completed in 1998. Currently the structure is scheduled to be moved this summer to its new site at the Heritage Center at Rockburn Park.

Update
Progress on this site has been slow in 2001 due to budget diversions and insufficient staffing of Recreation & Parks personnel capable of doing the necessary rehabilitation. The structure is currently scheduled to be moved to its new site at the Heritage Center at Rockburn Park this summer. PHC continues to monitor that schedule and looks forward to assisting the County in completing the move, restoration and eventual use as an interpretation center.