Allentown
https://www.cheltenhamtownship.org/pview.aspx?id=40797&catid=0
https://www.cedarcrest.edu/arboretum/index.shtm
Ambler
https://ambler.temple.edu/arboretum
Bath
http://www.muhlenberg.edu/cultural/graver/
Chadds Ford
https://www.brandywine.org/museum/gardens.html
Devon
Doyleston
https://en.wikipedia.org/wiki/Henry_Schmieder_Arboretum
Erie
https://behrend.psu.edu/about-the-college/the-arboretum-at-penn-state-behrend
Gladwyne
http://americasgardencapital.org/gardens/henry/henry-found.htm
Haverford
https://www.haverford.edu/arboretum
Hershey
https://www.hersheygardens.org/
Kennett Square
Lancaster
https://www.lancasterhistory.org/visit/tanger-arboretum/
Lower Merion
McKeesport
http://www.thegardenclubofmckeesport.org/
Mechanicsburg
https://web.archive.org/web/20060422043626/http://www.libertyforge.net/garden.htm
Media
http://www.tylerarboretum.org/
Merion
https://www.barnesfoundation.org/visit/merion
New Hope
Philadelphia
http://www.fairmountpark.org/hortcenter.as
http://www.morrisarboretum.org/
Pittsburgh
https://www.chatham.edu/about/location/shadyside/arboretum.cfm
https://www.phipps.conservatory.org/
http://pittsburghbotanicgarden.org/
Pottstown
Reading
https://www.readingpublicmuseum.org/
State College
Swarthmore
https://www.scottarboretum.org/
Upland
https://www.gardenvisit.com/gardens/crozer_arboretum_garden
Villanova
https://en.wikipedia.org/wiki/Appleford/Parsons-Banks_Arboretum
Wallingford
Wayne
http://www.chanticleergarden.org/