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The first stone tool recorded from Olduvai -- the one Louis Leakey brought back to camp in 1931 to win his bet with Hans Reck. By the time Mary Leakey retired from the field in 1983, the Olduvai horizons had disgorged over 37,000 more tools -- certainly the most grandly informative recorded of early man from any one site on earth. In addition to their sheer quantity, the Olduvai artifacts are of remarkable quality. More important, the nature of the tools changes through time, bearing testimony to the increasing sophistication of human culture through its first million and half years. ~ Page 149