Dear Mr. Midkiff,
Thank you for posting your request on History Hub!
We suggest that you begin your research by contacting the Pennsylvania State Archives, the New York State Archives, and the New York City Municipal Archives. They should be able to advise you on the disposition of incorporation documents created under the laws of their jurisdictions.
If the company or its successors still exist, there may also be a corporate archives. Some corporate archives are listed on the Society of American Archivists’ Directory of Corporate Archives in the United States and Canada.
We hope this information is helpful. Best of luck with your research!