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Surface collections from three sites at Red Butte, near Grand Canyon in northern Arizona, produced small, concave-based Pinto points, as well as fragmentary Ventana-Amargosa forms. In addition, a wide range of lithic tools was found. Lateral and basal grinding on several points suggest that at least one preceramic component is represented. No points characteristic of the ceramic period were obtained, but a few potsherds dating A.D. 1000-1200 were found on two of the sites. The pottery, unexpectedly, is attributable to Kayenta Anasazi rather than Cohonina. Presumably, but not demonstrably, this pottery is not associated with the points mentioned above. Neither the projectile forms nor the pottery complex from these sites has been reported previously from this immediate region.

This paper presents a method for quantifying "boundary effect" in square, rectangular, triangular, and circular study areas. It is based upon a very different, theoretically oriented modification of the classic computation methods, is applicable to the variously shaped study areas described, and produces results which approximate simulation data quite closely.

Students of the Hernando De Soto expedition are in general agreement that he crossed the Mississippi River at Quizquiz on June 18, 1541. There has been considerable debate about the location of Quizquiz, but not a great deal about the location of the Mississippi River when De Soto crossed it. Following the conclusion of Phillips in the Phillips, Ford, and Griffin volume it was generally assumed that Fisk’s River Stage 15 approximated the location of the river in 1541. This conclusion is questioned and more appropriate channel correlations are suggested.