The following preprints were submitted during the period 15 August 1999 to 15 November 1999. Please direct all requests for copies of preprints to the NOAO author marked.
852 *Méndez, R.A., Paltais, I., Girard, T.M., Kozhurina-Platais, V., van Altena, W.F., "A Large Local Rotational Speed for the Galaxy Found from Proper-Motions: Implications for the Mass of the Milky-Way"
853 *Sakai, S., Mould, J.R., Hughes, S.M.G., Huchra, J.P., Macri, L.M., Kennicutt, R.C., HST HoKey Project, "The Hubble Space Telescope Key Project on the Extragalactic Distance Scale XXIV: The Calibration of Tully-Fisher Relations and the Value of the Hubble Constant"
854 *Méndez, R.A., Minniti, D., "Faint Blue Objects on the Hubble Deep Field North & South as Possible Nearby Old Halo White Dwarfs"
855 *Méndez, R.A., Paltais, I., Girard, T.M., Kozhurina-Platais, V., van Altena, W.F., "Galactic Kinematics Towards the South Galactic Pole. First Results from the Yale-San Juan Southern Proper-Motion Program"
856 Corbin, M.R., *Smith, P.S., "Long-Term Spectroscopic Monitoring of Low-Redshift Quasars. I. Five-Year Report"
857 *Massey, P., "An Unprecedented Change in the Spectrum of S Doradus: As Cool As It Gets"
858 DaCosta, G.S., *Armandroff, T.E., Caldwell, N., Seitzer, P., "The Dwarf Spheroidal Companions to M31: WFPC2 Observations of Andromeda II"
859 Julian, W.H., *Samarasinha, N.H., Belton, M.J.S., "Thermal Straucture of Cometary Active Regions: Comet 1P/Halley"
860 *Komm, R.W., Howe, R., Hill, F., "Solar-Cycle Changes in GONG P-Mode Widths and Amplitudes 1995-98"