The Modulus is the student produced yearbook of Rose-Hulman Institute of Technology. It was first published in 1892 and was published biannually for several decades. It was published annually since the 1930s with the exception of a few years. The Modulus stopped publication after the 2003 volume, but resumed again in 2009. The final Modulus was the 2011-2012 volume.
If you are looking for information on years in which the modulus was not published please contact Ryan Weir at firstname.lastname@example.org.