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The Friends of Valley Forge

Our mission is to advocate for Valley Forge National Historical Park, to enhance the visitor experience and to promote public appreciation of the Park’s historic, environmental and recreational resources.

POSA Open House at the former Riddle Mansion

Sundays: July 12 & July 19 1 – 4 pm Free Event
Riddle Mansion

The Patriotic Order Sons of America (POSA), located in the former Riddle Mansion in Valley Forge, is the oldest patriotic organization in America. Friends and the general public are invited to a special open house where you can meet POSA members and tour the Riddle Mansion including the newly renovated Hall of Flags featuring 28 Revolutionary War and other historical flags.

Riddle Mansion is located at 10 Owen Road, Valley Forge PA and can be accessed off Rt. 23 near intersection of Rt. 252.

Click here to read more.


The organization was established on December 10, 1847 by Dr. Reynell Coates of Philadelphia, PA, as the Junior Sons of America, for young men aged 16 to 21. It is difficult to trace records from 1847 to 1868, due to the Civil War and many members that gave their final rewards and records were lost or destroyed. Camp #1 of Pennsylvania was granted the right to organize and charter camps in other states for native-born Americans.

In 1868, the organization was renamed the Patriotic Order Sons of America and membership was now open to anyone above the age of 21. The First National Convention was held from March 5-6, 1872, in Allentown, Pennsylvania. At this convention, subordinate camps outside of Pennsylvania were released to the National Camp. The founder of the organization, Dr. Reynell Coates, was invited to join the Patriotic Order Sons of America at the age of 75. He died in 1886. His efforts to prepare the Ritual for the Junior Sons of America, constitutional laws, preamble, selected odes, opening, closing, and initiation are still used today.

Bird Walks in Valley Forge

Tuesday, July 14 7:30 am 1.5 mile walk, 2 hrs (approx.)
Bird Walks in VF

Join Mary Ellen and Tom Heisey, avid local birders and members of the Friends for a fascinating and fun bird walk on the 2nd and 4th Tuesdays in July and 2nd and 3rd Tuesdays in August and September. Walk is intended for birders of all levels, so feel free to attend, even if you have never been on a bird walk. No worries if you do not have binoculars. Walk, enjoy the outdoors and learn to identify birds by ear.

During this 2 hour walk, you will hear or see about 30 species in 3 habitats of meadow, edge and woods. In July, all of the Neotropical migrants are here for the summer. Some of the most popular sightings include the Baltimore Oriole, Orchard Oriole, Eastern Kingbird, Indigo Bunting and Scarlet Tanager to mention a few.

Walk: Mostly paved trail but includes sections of short gravel and mowed grass. Good walking shoes recommended.

What to Bring: Binoculars and a hat. Bug spray and sun protection optional.

Where to Meet: Artillery Park Parking lot on East Inner Line Drive at 7:30 am. Near-by restrooms and water fountain available (May through September).

June Sightings: Participants spotted 40 species of birds and got some good looks at a variety of butterfly species. A highlight of the June 23 bird walk included viewing Eastern Kingbirds feeding their chicks in a nest.

Lunch and Learn Summer Speaker Series

Wednesdays noon – 1 pm Meeting Room

The Lunch and Learn series highlights some of the park’s most interesting and significant stories over the lunch hour. All ages are welcome. Bring your own brown bag lunch and we’ll provide the lemonade.

Lunch and Learn programs are free & open to the public.

July 8
Jeffery E. Finegan Sr.
Author of the book ’Tis Well... The Life and Death of George Washington
Colonel Washington & Me
July 15
Bruce Hustis
Park Volunteer
How Pennsylvania Got Its Shape
July 22
Carris Kocher
Friends of Valley Forge Park Volunteer
Milestones of Liberty in 1765
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