The Des Moines Register has gone by many other names in the past. Many - though not all - of the years of this paper are found archived in the microfilm cabinets located (downstairs) in the northeast corner of the first floor of Rod Library - near the microfilm readers.
For the period 1877 - 1885 you want the Iowa State Register (we have years 1878, 1879, and 1883)
For the period 1910 - 1915 you want the Register and Leader
For the the period 1926 - 1929 you want the Des Moines Register
The Waterloo Courier has undergone many name changes since the 19th century. Microfilm archives of the Courier are found in the microfilm cabinets located (downstairs) in the northeast corner of the first floor of Rod Library - near the microfilm readers.
For the period 1877 - 1885 you want The Waterloo Courier (Nov. 1859 - Aug. 1864; Jan. 1865 - Dec. 1897)
For the period 1910 - 1915 you want either the Waterloo Semi Weekly Courier (Dec. 1907 - July 1910) or the Waterloo Evening Courier (Sept. 1909 - Mar. 1914) or the Waterloo Evening Courier and Waterloo Daily Reporter (Mar. 1914 - Nov. 1929)
For the period 1926 - 1929 you want either the Waterloo Evening Courier and Waterloo Daily Reporter (Mar. 1914 - Nov. 1929) or the Waterloo Daily Courier (Nov. 1929 - Feb 1931)