D.T. Pierce, Spin-Polarized Electron Sources. A.P. Mills, Jr., Positron and Positronium Sources. G.D. Alton, Sources of Low-Charge-State Positive-Ion Beams. R.A. Phaneuf, Advanced Sources of Highly Charged Ions. G.C. King, Electron and Ion Optics. J.L. Erskine, Electron Energy Analyzers. T.J. Gay, Electron Polarimetry. K. Smith, Position Sensitive Particle Detection with Microchannel-Plate Electron Multipliers. D. Smith and P.Spanel[breve over s and e], Swarm Techniques. C.R. Vane and S. Datz, Accelerator-Based Atomic Physics. P.W. Harland, Ion Mass Analyzers. H.A. Klein, Ion Traps. R.S. Van Dyck, Jr., Ultra-High-Resolution Mass Spectroscopy in Penning Traps. R.E. Marrs, Electron Beam Ion Traps. T.J. Mego, DC Current Measurements. J.R. Willison, Signal Enhancement. Chapter References. Subject Index.