- History of Northampton County [Pennsylvania] and the Grand Valley of the Lehigh Under Supervision and Revision of William J. Heller, Assisted by an Advisory Board of Editors..; Volume 2
- History of Northampton County [Pennsylvania] and the Grand Valley of the Lehigh Under Supervision and Revision of William J. Heller, Assisted by an Advisory Board of Editors..; Volume 3
- History of Northampton County [Pennsylvania] and the Grand Valley of the Lehigh Under Supervision and Revision of William J. Heller, Assisted by an Advisory Board of Editors..; Volume 2
- Historic Easton From the Window of a Trolley-car
- Heller family history - Primary Source Edition
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