Learn about the development of the oscillating scan mirror (a key component of Virginia Norwood's multi-spectral scanner), which made Landsat I a success, changing the science of earth observation forever. The development of the oscillating scan mirror is documented in the "Virginia Norwood Papers," a new collection in the Geography & Map Division of the Library of Congress.
The deepest point in the Atlantic Ocean can be found about 100 miles north of Puerto Rico, in a trench where two tectonic plates meet. This post discusses the Puerto Rico Trench's unique geology and efforts to map it.
Celebrate Geography Awareness Week and GIS Day at the Library of Congress on Thursday, November 21st from 5pm to 8pm with Mapping Our World, a special Live! at the Library event diving into ocean mapping and exploration! This event will feature a collections display, interactive games and crafts, and a talk by Dr. Vicki Ferrini of Columbia University on the history of ocean mapping.
This post spotlights born-digital, georeferenced map series from the MapServer Ethiopia project, which provides modern mapping of Ethiopia at five different scales, across multiple themes.
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.
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.
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 …
