The FBI has agreed to drop its demand that a San Francisco-based Internet library turn over subscriber information, according to court documents unsealed Monday. As part of a settlement, the FBI also agreed that its previously secret efforts could be publicized.

The bureau served the Internet Archive — whose Wayback Machine page allows viewers to see old versions of millions of Web pages — with a national security letter in November 2007, but under the terms of a settlement reached between the two in April, the FBI has withdrawn the letter and agreed to make most of its contents public.