Normalized archival HST spectra of NGC 985 covering the region of Lyα absorption seen in the 2013 and 2015 COS spectra. The 1999 STIS spectrum is in green; the 2013 COS spectrum is in black; the 2015-01-14 COS spectrum is in blue; the 2015-01-26 COS spectrum is in red. For display purposes, the COS spectrum have been binned by 8 pixels (1 resolution element); the STIS spectrum has not been binned. Interstellar absorption features unrelated to NGC 985 are designated with a “G”.