I: Introduction. The 1999 Leonid Multi-Instrument Aircraft Campaign - An Early Review; P. Jenniskens, et al. USAF Perspectives on Leonid Threat and Data Gathering Campaigns; M.H. Treu, et al. The Meteor Alert Center' (MALC) and its Application During the 1999 Leonid Shower; J. Zender, et al. Coordinated Observations of Leonids in Israel; N. Brosch. II: Astrobiology. Meteors: A Delivery Mechanism of Organic Matter to the Early Earth; P. Jenniskens, et al. Search for Organic Matter in Leonid Meteors; R.L. Rairden, P. Jenniskens. Observations of Leonid Meteors Using a Mid-Wave Infrared Imaging Spectrograph; G.S. Rossano, et al. Computation of Atmospheric Entry Flow About a Leonid Meteoroid; I.D. Boyd. Screening of Meteoroids by Ablation Vapor in High-Velocity Meteors; O.P. Popova, et al. Search for Extraterrestrial Origin of Atmospheric Trace Molecules - Radio Sub-MM Observations During the Leonids; D. Despois, et al. Organic Matter in Dust of Comet 21P/Giacobini-Zinner and the Draconid Meteors; N.N. Kiselev, et al. III: Comet Dust Trail: Meteoroid Stream Dynamics. Predicting the Strength of Leonid Outbursts; E.J. Lyytinen, T. Van Flandern. Global Ground-Based Electro-Optical and Radar Observations of the 1999 Leonid Shower: First Results; P. Brown, et al. Lorentz Shaped Comet Dust Trail Cross Section From New Hybrid Visual and Video Meteor Counting Technique-Implications for Future Leonid Storm Encounters; P. Jenniskens, et al. Comparing Meteor Number Fluxes from Ground-Based and Airplane-Based Video Observations; D. Koschny, J. Zender. Leonid Storm Flux Analysis from One Leonid Mac Video AL50R; P.S. Gural, P. Jenniskens. The Leonid Meteors and Space Shuttle Risk Assessment; J.F. Pawlowski, T.T. Hebert. Visual Observations of 1998 and 1999 Leonids in Israel; A. Mikishev, A. Levina. Observations of the Leonid Meteoroid Stream by a Multistation FS Radio System; G. Cevolani, et al. Precise Trajectories and Orbits of Meteoroids from the 1999 Leonid Meteor Storm; H. Betlem, et al. Photographic Leonids 1998 Observed at MODRA Observatory; J. Toth, et al. Temporal Variation in the Orbital Element Distribution of the 1998 Leonid Outburst; M.C. de Lignie, et al. 1997 Leonid Shower From Space; P. Jenniskens, et al. IV: Meteoroid Composition and Ablation. From Comets to Meteors; J.M. Greenberg. Collected Extraterrestrial Materials: Constraints on Meteor and Fireball Composition; F.J.M. Rietmeijer, J.A. Nuth III. Comparison of 1998 and 1999 Leonid Light Curve Morphology and Meteoroid Structure; I.S. Murray, et al. First Results of High-Definition TV Spectroscopic Observations of the 1999 Leonid Meteor Shower; S. Abe, et al. Jet-Like Structures and Wake in MG (518 NM) Images of 1999 Leonid Storm Meteors; M.J. Taylor, et al. Ground-Based Leonid Imaging in the UV; E. Almoznino, J.M. Topaz. V: Meteor Afterglow and Persistent Trains. Time Resolved Spectroscopy of a Leonid Fireball Afterglow; J. Borovicka, P. Jenniskens. Feo 'Orange Arc' Emission Detected in Optical Spectrum of Leonid Persistent Train; P. Jenniskens, et al. Mid-Infrared Spectroscopy of Persistent Leonid Trains; R. Russell, et al. Buoyancy of the 'Y2K' Persistent Train and the Trajectory of the 04:00:29 UT Leonid Fireball; P. Jenniskens, R.L. Rairden. The Dynamical Evolution of a Tubular Leonid Persistent Train; P. Jenniskens, et al. VI: Meteoroid Debris. Dust Particles in the Atmosphere During the Leonid Meteor Showers of 1998 and 1999; N. Mateshvili, et al. Recognizing Leonid Meteoroids Among the Collected Stratospheric Dust; F.J.M. Rietmeijer, P. Jenniskens. VII: Mesosphere and Lower Thermosphere. Preliminary Data on Variations of OH Airglow During the Leonid 1999 Meteor Storm; J. Kristl, et al. Airglow and Meteor Rates over Israel During the 1999 Leonid Shower; N. Brosch, O. Shemmer. ELF/VLF Radiation Produced by the 1999 Leonid Meteors; C. Price, M. Blum. Note on the Reaction of the Upper Atmosphere Potassium Layer to the 1999 Leonid Meteor Storm; J. Hoffner, et al. Mesospheric and Lower Thermospheric Winds at Middle Europe and Northern Scandinavia During the Leonid 1999 Meteor Storm; W. Singer, et al. VII: Impacts on the Moon. Observation and Interpretation of Meteoroid Impact Flashes on the Moon; L.R. Bellot Rubio, et al. Subject Index.