The Scotch-Irish in America: Proceedings and Addresses of the Scotch-Irish Congress

The following volumes are available for free online, courtesy: Google Books:


 * Volume 1 (1889)
 * Volume 2 (1890)
 * Volume 3 (1891)
 * Volume 4 (1892)
 * Volume 5 (1893)
 * Volume 6 (1894)
 * Volume 7 (1895)
 * Volume 8 (1897)
 * Volume 9 (1900)
 * Volume 10 (1902)