This directory contains FITS images of M81 from Willner et al., 2004 ApJ Suppl. 154, 222. These processed mosaics are Copyright 2004 by Smithsonian Astrophysical Observatory. Permission is granted for scholarly and non-profit use provided proper credit is given. (Please cite the above article in scholarly publications.) The four files contain data in the 3.6, 4.5, 5.8, and 8.0 micron IRAC channels processed with pipeline version 8.5.0 and the 2004 January version of MOPEX. Raw and pipeline processed data are freely available from the Spitzer Science Center by requesting pid 1035. Newly requested data will be processed with a later pipeline than these mosaics. Other images of M81 from the SINGS Legacy Project (Kennicutt et al., 2003 PASP 115, 928) should also be available from the SSC.