The line from the song in West Side Story - "everything's free in America!" - is fast becoming reality.
The Digital Map Store is offering free printable topo maps from USGS, Forest Service, and Natural Resource Canada.
Meanwhile, the USGS announced earlier this week that over the next 9 months, they will be opening up the Landsat archive for no-charge ordering.
Data Available over the Internet
Landsat 7 – all new global acquisitions July 2008
Landsat 7 – all data September 2008
Landsat 5 – all TM data December 2008
Landsat 4 – all TM data January 2009
Landsat 1-5 – all MSS data January 2009