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Posted by: Ed Redmond
Washington, D.C., was established as the “permanent seat of the Federal Government” by the passage of the Residence Act in 1790. This act allowed President George Washington to select the site for the new city anywhere along the banks of the Potomac River between its junction with the Shenandoah River, near present day Harpers Ferry, …
Posted in: American History, City Histories
Posted by: Ed Redmond
Originally published in 1874, these maps of the eastern half of the United States were designed to show the distribution of diseases including typhoid, malaria, pneumonia, tuberculosis, and rheumatism that affected the US population. The maps were published by L.H. Carney, M.D., but we find no biographical data on the author. Medical data (in the …
Posted in: 19th century cartography
Posted by: Ed Redmond
As we learned in my previous blog, surveying is the art of measuring land. During the 18th century colonial surveying was relatively crude. A fixed “beginning point” such as a tree or a rock was established as the starting point for the survey. A 66 foot long chain, commonly known as a Gunters Chain, was …
Posted in: 18th century cartography, 19th century cartography
Posted by: Ed Redmond
This is the first of two posts outlining traditional 18th and 19th surveying methods. According to the Encyclopedia Britannica, surveying is the art and science of measuring land. More precisely, it is “a means of making relatively large-scale, accurate measurements of the Earth’s surface.” The authoritative 18th century treatise on surveying, entitled “The Compleat Surveyor or …
Posted in: 18th century cartography
Posted by: Ed Redmond
The collections of the Library of Congress include thirteen early nautical or portolan charts published between 1320 and 1734. Cartographic historians and map librarians are familiar with these early charts. But what, exactly, is a “portolan” chart? This post will attempt to address a few of the basic ideas revolving around these early nautical charts. …
Posted in: Exploration
Posted by: Ed Redmond
President Millard Fillmore (1800-1874) was elected to the Office of the Vice President of the United States in 1848 and, due to the untimely death of President Zachary Taylor in 1850, Fillmore became the 13th President of the United States. From the standpoint of the Geography and Map Division, however, Millard Fillmore’s most important contribution …
Posted in: Biography
Posted by: Ed Redmond
During the winter of 1776-1777, two key battles became an important turning point for George Washington’s Continental Army and the American struggle against the vaunted British Empire. In this blog post we will explore three maps that depict the Battles of Trenton and Princeton, all from different collections in the division and drawn by various …
Posted in: American History, Military History
Posted by: Ed Redmond
According to lore, the very first Thanksgiving was celebrated in what is today Plymouth, Massachusetts. The location owes its name to the English port of Plymouth where the settlers, also referred to as Pilgrims, began their transatlantic voyage. The Mayflower set sail in September 1620 and arrived near Cape Cod, Massachusetts in December 1620. After …
Posted in: 17th century cartography, 18th century cartography, American History
Posted by: Ed Redmond
This is part of a series of posts documenting the cartographic history of maps related to the American Civil War, 1861-1865. The posts will appear on a regular basis. One of the most iconic naval battles of the Civil War was the four-hour duel between the ironclad vessels USS Monitor and the CSS Merrimac, which …
Posted in: Military History, Series: Places in Civil War History