Friendship School

Liberty School No. 4, Friendship Building
U.S. National Register of Historic Places
City of Pittsburgh Historic Structure
Pittsburgh Landmark – PHLF
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Location	5501 Friendship Ave., Pittsburgh, Pennsylvania
Coordinates	40°27′44″N79°56′9″W / 40.46222°N 79.93583°W / 40.46222; -79.93583
Area	2 acres (0.81 ha)
Built	1899
Architect	Bartberger, Charles M.
Architectural style	Beaux Arts
MPS	Pittsburgh Public Schools TR
NRHP reference No.	86002684 [1]
Significant dates
Added to NRHP	September 30, 1986
Designated CPHS	November 30, 1999 [2]
Designated PHLF	1998 [3]

The Friendship School, also known as Liberty School No. 4, is a school building built in 1899 in the Friendship neighborhood of Pittsburgh, Pennsylvania. It now houses Pittsburgh Montessori School PreK-5, a public Montessori Magnet School that is part of the Pittsburgh Public School District. It was listed on the National Register of Historic Places in 1986. ^{[1] [4]}

References

1. "National Register Information System". National Register of Historic Places . National Park Service. March 13, 2009.
2. "Local Historic Designations". Pittsburgh: Pittsburgh History & Landmarks Foundation. Retrieved August 5, 2011.
3. Historic Landmark Plaques 1968-2009 (PDF). Pittsburgh, PA: Pittsburgh History & Landmarks Foundation. 2010. Retrieved August 5, 2011.
4. Lu Donnelly (May 1985). National Register of Historic Places Registration: Pennsylvania MPS Liberty School No. 4, Friendship Building. National Archives and Records Administration. Retrieved December 8, 2025. (Downloading may be slow.)