Hello All, The Soda House has records of The DuPont Company, the Railroads and so many others. They have Probate records of the DuPont's. I found them helpful in researching my Irish Ancestors that worked at the Mill. I found people on the Brandywine Manufactures Sunday School Records and in the payroll ledgers. I feel inadequate telling about their holdings because it is so vast. It is however a time consuming but Very interesting way to do research because you have to read thru manuscripts and sift through collections. If you have an interest in History particularly Irish in Delaware this is the place to go. Go to the Hagley Museum Website to find them. I hope this helps someone. It is located just off Rt. 100 (Monchanin Road) in New Castle County. It is behind the actual museum so you have to take a different entrance. Sharon