Waving Pennsylvania state flag; photo by Jason Trommetter on Flickr (noncommercial use permitted with attribution / share alike).
Official State Flag of Pennsylvania
The first state flag of Pennsylvania was authorized by the General Assembly in 1799. A law was passed in 1907 standardizing the flag and requiring that the blue field match the blue of "Old Glory" (the national flag). All State Flags
Pennsylvania's flag features the state coat of arms on a field of blue. The state motto appears on a ribbon at the base of the design ("Liberty, Virtue, Independence"). The Pennsylvania coat of arms is also featured on the state seal.