In Walter Isaacson’s biography of Steve Jobs, D.C.’s role is a cameo at best. Isaacson speaks and signs Thursday night at Politics and Prose (5015 Connecticut Ave. NW; 7 p.m., free; 202-364-1919, The event inspired us to seek out local traces of the man who told Barack Obama he was “headed for a one-term presidency.”

Ugh, Paper: Jobs toured the Library of Congress (10 First St. SE) in 1988, according to an elderly Post article. His blunt take: “There has to be a better way.”

Before the Turtleneck: At the National Portrait Gallery (8th and F streets NW), this 1982 portrait, shot by Diana Walker, hangs across from a comparatively gauche painting of Bill and Melinda Gates. Both are just inside the G Street entrance.

Invisible Artifacts: The National Museum of American History (1400 Constitution Ave. NW) holds several items of Jobsian provenance, among them the first Macintosh (serial number 1!) and a NeXT computer. None are on view, at the moment. iCloud, Smithsonian. Get with the program.