Great site for Eastern PA research

The Delaware Co, PA Archives office has a pretty decent website with the ability to search for administration files, wills, Orphan's Court files, marriages, and naturalizations. The site is located at http://www.co.delaware.pa.us/depts/archives.html and the staff there is really helpful and will answer questions via email, which is really handy. I've ordered several copies from them with no trouble, plus the prices and wait-times are reasonable. Considering the close proximity to Philadelphia, the Delaware Co Archives may be worth checking into for those researching in Eastern PA.