Historic Atlas & Mapping

Penn Pilot Aerial Photography
Penn Pilot was a Penn State University project that showed industrial growth in the state of Pennsylvania over a roughly 50-year period, with three sets of photos taken (1930s, 1950s, 1970s).  A useful tool for identifying lost farmsteads and homesteads.

Historic Map Works
This tool helps researchers across the nation identify old home and farmsteads, lots, and structures.  A necessity for any relic or old coin digger.

Historic Aerial Photography
Similar to Penn Pilot, but not limited to the state of Pennsylvania.


Public Property Records
All counties have a public records office. Most have put them online, and if you're lucky, some have a visual map tool.  A necessity for any researcher as permission should always be obtained prior to any trek across private property.

Delaware County Property Records
This tool helps researchers in Delaware County, PA identify current ownership of properties, lots, and tracts. 

Montgomery County Property Records (Map!)
This tool helps researchers in MontCo, PA identify current ownership of properties, lots, and tracts. 

Bucks County Property Records
This tool helps researchers in Bucks County, PA identify current ownership of properties, lots, and tracts. 

Northampton County Property Records (Map!)
This tool helps researchers in Northampton County, PA identify current ownership of properties, lots, and tracts.

Lehigh County Property Records
This tool helps researchers in Lehigh County, PA identify current ownership of properties, lots, and tracts.

Pennsylvania Open Records Office
The state website will likely have more information on historic sites than individual property lots.


Historic Site Preservation & Restoration

National Park Service
NPS offers grants for historic site preservation & restoration, as well as links for the National Register of Historic Places.

National Historic Landmarks - Federal Regulations
This online government resource outlines the criteria for earning (and losing) National Historic Landmark certification.

Pennsylvania Historic Marker Program
Since 1946, the Pennsylvania Historical and Museum Commission has administered a program of historical markers to capture the memory of people, places, and events that have affected the lives of Pennsylvanians over the centuries since William Penn founded his Commonwealth.


Artifact Identification

TreasureNet
As the saying goes, "One man's trash is another's treasure!" This free-to-register forum covers artifact identification from a number of categories, from shipwrecks to metal detecting, coins, gold prospecting, techniques, preservation, mapping, ghost towns, stamp collecting, fossils and everything in between. Simply register, log in, and post your artifact, and one of the forum's many experts will help you figure out what you have.

Identifying Glass Bottle Manufacturers
Bottles and containers of all types, fruit jars, fishing net floats, EAPG (Early American Pattern Glass), Depression glass, children’s mugs, and tableware are the primary foci of this site.

Identifying Glass & Porcelain Insulators
The National Insulator Alliance (NIA) is the premier club for insulator enthusiasts, and they have devised a serial numbering system for identifying the multitude of differing styles of insulators.

Attributing Large American Copper Cents
A very useful site for attributing the hundreds of die patterns used each year for minting US large copper cents.

Identifying & Dating Bells
A useful site for attributing sleigh, harness, carriage and horse bells to their manufacturers.