Doing some research on your work-in-progress? Check out the Library of Congress Research and Reference Services. You’ll want to bookmark it so you can spend quality time there.

I found it to be one of the most pleasant rabbit holes I’d ever gone down.

If you’re not familiar, I recommend starting at the Quick Links (on the far right column) with the Getting Started and Frequently Asked Questions pages.

Also bookmark-worthy:

• The Library of Congress main page, which has links to just about everything
• The LOC digital collections that are free to use and reuse
• LOC blogs (in their words: “compelling stories & fascinating facts”; they are not wrong)