The database America's News from Newsbank offers coverage of the Amarillo Globle-News from 2002 to the present and coverage of almost 100 other Texas newspapers from sometimes as far back as 1985.
The Library of Congress site Chronicling America: Historic American Newspapers includes coverage of The Amarillo Daily News from 1911 through 1922 and the Canyon City News / Randall County News from 1903 to 1909, as well as Amarillo's Daily Panhandle from 1907 to 1920 and a few years of the Canyon City Stayer, the Amarillo Weekly Herald, and the Amarillo Twice-a-Week Herald.
The website The Portal to Texas History, from the University of North Texas, includes newspaper coverage for Hemphill County, Borger, Canadian, Claude, Hereford, Panhandle, and Amarillo.
We have the Amarillo Globe-News and its predecessor from 1960 to the present, with some gaps, and the Canyon News and its predecessors from 1901-present, with some gaps.
We also have the Canyon News in bound volumes from 1927 to 1993.