NASA SkyWatch - A tool that helps you know when or where to look to see the station or other spacecraft in the night sky. - http://spaceflight.nasa.gov/realdata/sightings/
ON6MU Space and Satellite - Satellite information, ISS information, ISS software, NASA Live TV, images, Kepler data, and links. - http://users.belgacom.net/hamradio/sat-info.htm
Visual Satellite Observer - Provides information on all facets of visual observation. - http://www.satobs.org/
Tiger Map Server - Map service to find their exact latitude and longitude of observing area location. - http://tiger.census.gov/cgi-bin/mapbrowse-tbl
SoCal Sky Lights - Schedule for rocket launches with information for iridium flares, meteor showers, ISS and space shuttle, and delta launches. - http://www.socal-skylights.org/
Jonathan's Space Report - Issued twice a month, and describes all space launches, including piloted missions and automated satellites. - http://www.planet4589.org/space/jsr/jsr.html
The Falcon's Nest - Personal notes from an enthusiast, images, and radio frequencies and voice. - http://home.earthlink.net/~w0dfi/2nd.html
AstroSpider - Solar system and deep sky galleries, remote images, images of satellites, and equipment information. - http://www.astrospider.com/
Iridium Flares - Article containing information, predictions, and further links. - http://www.assa.org.au/observing/iridium/
Orbitessera - Spacecraft information, orbital data and Keplerian elements, radio frequencies, software information, orbital mechanics background information, radio and antenna tracking interfaces, and links. - http://www.orbitessera.com