Hadley Township near Barry in Pike County, Illinois — The American Midwest (Great Lakes)

The Archaeological Conservancy

Photographed by William Fischer, Jr., June 5, 2026

1. The Archaeological Conservancy Marker

Inscription.

[Historical] Map of Philadelphia

The Archaeological Conservancy, a non-profit organization dedicated to preserve our nation's most important archaeological sites, owns 9.14 acres of the historic town site.

Under the stewardship of The Archaeological Conservancy, the preservation of New Philadelphia's commercial center, located on Blocks 2, 3, 8 and 9, is ensured. Archaeologists unearthed extensive remains of the town's households and businesses here.

Erected by The Archaeological Conservancy.

Topics. This historical marker is listed in these topic lists: Anthropology & Archaeology • Charity & Public Work.

Location. 39° 41.882′ N, 90° 57.682′ W. Marker is near Barry, Illinois, in Pike County. It is in Hadley Township. It is at the intersection of County Route 2 and 306th Lane/Broad Street (County Route 2159E), on the right when traveling east on County Route 2. Marker is on the west side of the New Philadelphia NHS information pavilion. Touch for map. Marker is at or near this postal address: 29766 306th Lane, Barry IL 62312, United States of America. Touch for directions.

Regionally, this marker is in the Illinois River Valley.

It is also in the American Midwest,

in the Corn Belt,

and in the Great River Road Region.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once the territory of the Mississippian Culture

and also the Northwest Territory.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Free Frank and Free Lucy McWorter (here, next to this marker); New Philadelphia Town Site (here, next

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to this marker); The Burdick Families of New Philadelphia (here, next to this marker); New Philadelphia Townsite (here, next to this marker); New Philadelphia: The Town, The Community (here, next to this marker); How Many People Lived in New Philadelphia? (a few steps from this marker); New Philadelphia (a few steps from this marker); New Philadelphia in the Civil War Era (a few steps from this marker). Touch for a list and map of all markers in Barry.

Another marker is no longer nearby. Site of New Philadelphia (was here, next to this marker).

Also see . . .
1. New Philadelphia transferred to Illinois nonprofit (The Archaeological Conservancy, 2025). (Submitted on June 7, 2026, by William Fischer, Jr. of Reynoldsburg, Ohio.)
2. The New Philadelphia Association. (Submitted on June 7, 2026, by William Fischer, Jr. of Reynoldsburg, Ohio.)

Kiosk/Pavilion at New Philadelphia image. Click for full size.

Photographed by Emily Pursley, March 24, 2019

2. Kiosk/Pavilion at New Philadelphia

Marker is on the center foreground pavilion support pole

Credits. This page was last revised on June 7, 2026. It was originally submitted on June 7, 2026, by William Fischer, Jr. of Reynoldsburg, Ohio. This page has been viewed 9 times since then. Photos: 1. submitted on June 7, 2026, by William Fischer, Jr. of Reynoldsburg, Ohio. 2. submitted on May 30, 2019, by Emily Pursley of Pittsfield, Illinois.