Answer: The Library of Congress.
The tech-savvy folks at the LOC have blogging for some time and now they’ve jumped onto the Twitter bandwagon. For now, it’s a slow start, as these recent selected tweets show:
1:15 PM Jan 27th: Interest in upcoming Lincoln exhibit & Lincoln/Obama Bible is staggering. Many top-tier media here this week and next.
about 22 hours ago: 1,008 followers — holy mackerel! You guys are the best!