Most of the reference material on German language and literature can be found in the Reference Room on the 1^st floor of Mullen Library (non-circulating).  The call number ranges for Germanic language is PD 1-7159 and West Germanic PF 1-5999. The call numbers for Germanic literature are PT 1-4897.  Circulating material is found in the Mullen Library stacks.  Floor map of Mullen Library; Map of Mullen Stacks. Check the WRLC catalog for monographs and journals that could be applicable to your topic. Check the CU’s e-journals for full text journal articles online.