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Posted by: Meagan Snow
The Geography and Map Division has three geospatial news items to an announce: an upcoming virtual orientation on Geospatial Resources, a new GIS and Geospatial Resources Research Guide, and a new digital collection featuring Library of Congress Geospatial Applications.
Posted in: Events, Geographic Information Science, Geography and Map Division, Reference Guides
Posted by: Tim St. Onge
The Library of Congress celebrates GIS Day with a virtual event featuring talks on climate change mapping and geospatial technologies.
Posted in: Events, Geographic Information Science, Geography and Map Division
Posted by: Meagan Snow
This blog posts provides an introduction to some early maps produced from images captured by ERTS-1 (later known as Landsat I), the world's first earth-observing satellite.
Posted in: 20th century cartography, Big Data and Visualization, Geographic Information Science
Posted by: Carissa Pastuch
This is a guest post by Rachel Trent, Digital Collections and Automation Coordinator in the Geography and Map Division. The image below is of a TIFF file, but not just any TIFF. Hidden inside are coordinates that bind the image to a specific place on Earth. For every pixel in the image, an estimated latitude …
Posted in: Geographic Information Science, Guest Posts
Posted by: Meagan Snow
How have national and global populations been mapped over time? This blog post uses collection items from the Geography & Map Division at the Library of Congress to explore changing methods for mapping populations, from census-based thematic maps to modern population raster datasets.
Posted in: Big Data and Visualization, Geographic Information Science