Library of Congress Subject Headings offer a controlled vocabulary that simplifies searching the Library of Congress Online Catalog—and many other library catalogs. 

Choose the topics you wish to search from the following list of subjects to link directly to the catalog and automatically execute a search that will allow you to browse related subject headings.

Aeronautics, Military--United States--History--19th century

Ballooning--United States--History--19th century

Lowe, T.S.C. (Thaddeus Sobieski Coulincourt)--1832-1913

United States--History--Civil War, 1861-1865--Aerial Operations

United States--History--Civil War, 1861-65--Balloons

United States--History--Civil War, 1861-1865--Technology