About the resource:
Among its many other wonders, you can find a marvellous run of 16th- and 17th-century CSPD on the Internet Archive. But they’re not consistently titled, and there are duplicates of many volumes, so it’s not easy to piece them together. I made a chronological list while I was preparing a sample of State Papers petitions for the Power of Petitioning project, so it may be helpful to share it. (For R users, I found the Internet Archive package and this rOpenSci tutorial very helpful.)