Microform Information Center: this appears to have been done by a staff member at William and Mary and has a lot of useful links compiled in one place.
The Microforms Discussion Group page hosts the discussion group archives and a number of useful links (keep scrolling).
Online National Register of Microform Masters -- this is about the NRMM, but does not link to an online version of it; by "online", they mean on OCLC and RLIN.
Microform resources on the Internet Project at U Cal Irvine.
READING ROOMS
Microform sets at the U of Mich Graduate Library : a guide to the bigger sets in the Harlan Hatcher Graduate Library
Website for the Library of Congress Microrform Reading Room
Website for Yale
University Library's Newspaper and Microform Reading Room.