This electronic second edition of the Union List of Astronomy Serials is preliminary. After many years of slow going on the second edition, we thought it beneficial to make the data available now over the Internet. In the meantime, Judy Bausch at Yerkes Observatory will continue to accept changes and corrections, and the data will be updated occasionally. Some errors may have occurred during data transfer; please bring those to Judy's attention as well. Send any changes or corrections to Judy Bausch at jab@yerkes.uchicago.edu; or P.O. Box 258, Williams Bay, WI 53191. Notices of updates will be distributed over PAMNet. The code of libraries follows: ASU: Noble Science and Engineering Library, Arizona State University, Tempe, AZ 85287 Caltech: California Institute of Technology Libraries, Astrophysics Library 105-24, Pasadena, CA 91125 CASLEO: Complejo Astronomico "El Leoncito" 5400 San Juan, Argentina CfA: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 CMU: Central Michigan University, Mount Pleasant, MI 48859 CSU: Stanford University, Physics Library, Stanford, CA 94305 CU: Columbia University, Physics/Astronomy Library, 538 W. 120th St., New York, NY 10027 DCL: Dartmouth College, Kresge Science Library, Hanover, NH 03755 DLC: Library of Congress, 10 1st St., SE, Washington, DC 20540 ESO: European Southern Observatory, Karl-Schwarzschild-Str. 2, D-8046 Garching bei Munchen, Germany ESOLS: European Southern Observatory, La Silla, Chile Fern: Fernbank Science Center, 156 Heaton Park, NE, Atlanta, GA 30307 FU: University of Florida, Marston Science Library, Gainesville, FL 32611 IAA: Istituto de Astrofisica de Andalucia, Apartado de Correos, 3004, 18080 Granada, Spain IFA: Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 ILU: University of Illinois, Physics Astronomy Library, Urbana, IL 61801 InU: Swain Hall Library, Indiana University, Bloomington, IN 47405 KPNO: Kitt Peak National Observatory Library, P.O. Box 26732, Tucson, AZ 85726 KyU: University of Kentucky, Chemistry/Physics Library, 150 Chemistry/Physics Building, Lexington, KY 40506-0055 LO: Lowell Observatory, 1400 W. Mars Hill Road, Flagstaff, AZ 86001 MAS: Astronomical Observatory of Cordoba, 854 Laprida Street, 5000 Cordoba, Argentine Republic McD: McDonald Observatory Library, P.O. Box 1337, Fort Davis, TX 79734 MiU: University of Michigan, Physics-Astronomy Library, Ann Arbor, MI 48109 NCU: University of North Carolina, Math-Physics Library, Chapel Hill, NC 27514 NRAO: National Radio Astronomy Observatory Library, 520 Edgemont Road, Charlottesville, VA 22903 NSO: National Solar Observatory Library, Sunspot, NM 88349 NU: Astronomy Department Library, Nanjing University, Nanjing 210008, China NW: Science-Engineering Library, Northwestern University, 2233 Sheridan Road, Evanston, IL 60208 PMO: Purple Mountain Observatory, Academia Sinica, Nanjing, China PPT: Temple University, Physics Library, Philadelphia, PA 19122 PRL = Physical Research Laboratory, Navrangpura, Ahmedabad 38009, India PUO = Princeton University Observatory, Peyton Hall, Princeton, NJ 08554 SAO = Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 SB: State University of New York at Stony Brook, Stony Brook, NY 11794-2100 SO = Steward Observatory, University of Arizona, Tucson, AZ 85721 STI - Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 TxU: University of Texas at Austin, Physics-Math-Astronomy Library, RLM 4.200, Austin, TX 78713-7330 UCLA: University of California, Los Angeles, Physical Sciences and Technology Libraries, 8251 Boelter Hall, Los Angeles, CA 90024 USNO: United States Naval Observatory Library, 3450 Massachusetts Ave., N.W., Washington, D.C. 20392-5420 UTor: Astronomy Library, University of Toronto, Rm. 1306, 60 St. George St., Toronto, Ontario, Canada M5S 1A7 UWis: Washburn Observatory Library, University of Wisconsin, 475 N. Charter St., Madison, WI 53706 WSO: Warner & Swasey Observatory, Case Western Reserve University, Department of Astronomy - Smith Building, Cleveland, OH 44106 Yerk: Yerkes Observatory, P.O. Box 258, Williams Bay, WI 53191. Copyright 1994 by the Physics-Astronomy-Mathematics Division of the Special Libraries Association.