For 30 years, Nora Ephron told everyone her knowledge of the most famous anonymous source in the history of American journalism. But it wasn’t until 2005 that people realized she was right.

TUESDAY Dreckifying The Shop Around the Corner notwithstanding, Nora Ephron has a solid track record of bringing the funny. Why so wistful, then, Nora? Find out tonight at Politics and Prose as she discusses I Feel Bad About My Neck: And Other Thoughts on Being a Woman. 5015 Connecticut Ave. NW., 7 p.m. If you can’t make it, she’ll be making another D.C. stop Wednesday at the District of Columbia Jewish Community Center, 16th &…