<P><I>From Reliable Sources</I> is a lively introduction to historical methodology, an overview of the techniques historians must master in order to reconstruct the past. Its focus on the basics of source criticism, rather than on how to find references or on the process of writing, makes it an invaluable guide for all students of history and for anyone who must extract meaning from written and unwritten sources.</P><P>Martha Howell and Walter Prevenier explore the methods employed by historians to establish the reliability of materials; how they choose, authenticate, decode, compare, and, finally, interpret those sources. Illustrating their discussion with examples from the distant past as well as more contemporary events, they pay particular attention to recent information media, such as television, film, and videotape.</P><P>The authors do not subscribe to the positivist belief that the historian can attain objective and total knowledge of the past. Instead, they argue that each gen