The Smithsonian Astrophysical Observatory (SAG) maintains a molecular line database (the SAO line database) for analysis of atmospheric spectra in the far i.r. and longer-wave mid i.r., from 10-800 cm(-1). This database combines the best currently available line parameters, including the HITRAN(1,2) molecular database, the JPL submillimeter, millimeter, and microwave spectral line catalog(3) (JPLSMM), and other available measurements and calculations. The current version of the database contains 154,895 lines from H2O, CO2, O-3, N2O, CO, CH4, O-2 (including the (1) Delta state), NO, SO2, NO2, NH3, HNO3, OH, HF, HCl, HBr, HI, ClO, OCS, H2CO, HOCl, HCN, H2O2, O(P-3), and HO2. The database is available in both HITRAN-type 80 character (SAO92) and 100 character (SAO92A) formats. 1. L. S. Rothman, R. R. Gamache, A. Goldman, L. R. Brown, R. A. Toth, H. M. Pickett, R. L. Poynter, J.-M. Flaud, C. Camy-Peyret, A. Barbe, N. Husson, C. P. Rinsland, and M. A. H. Smith, Appl. Opt. 26, 4058 (1987). 2. L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. Chris Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, and R. A. Toth, JQSRT. 48, 469 (1992). 3. R. L. Poynter and H. M. Pickett, Submillimeter millimeter and microwave spectral line catalog, Publ. 80-23, revision 2, Jet Propulsion Laboratory, Pasadena, CA (1984).