Chestnut Hill Links:

Chestnut Hill Business Association
Chestnut Hill College
Chestnut Hill Community Association
Chestnut Hill Historical Society
Chestnut Hill Rotary
Friends of Wissahickon
Morris Arboretum
Run For the Hill of it
Stagecrafters
Woodmere Art Museum

Schools in Chestnut Hill: 

John S. Jenks School
Crefeld School
Springside School
Chestnut Hill Academy
Norwood-Fontbonne Academy
Our Mother of Consolation
Chestnut Hill College

Government Services:

State of Pennslyvania
City of Philadelphia
Fairmount Park
Philly Neighborhoods
Social Security Administration

Transportation:

Septa
Amtrak

Health:

Chestnut Hill Health