The Universal Transverse Mercator Grid is a rectangular grid system now used on all standard military maps. Archaeologists could use this system for site location, which would prove especially beneficial in areas where townships and range grids have not been drawn. The use of the series of numbers in the system would help eliminate duplication in state or regional site files.

Salwen (1967) in commenting on Emery and Edwards’ stimulating article supplied several important data for northeastern United States. The author, who has for a long time been in agreement with Emery and Edwards’ general conclusions, offers additional supportive data from both coasts of Florida.

In view of the potential significance to American archaeology of the discovery of man-made artifacts along with extinct fauna near Valsequillo, Puebla, Mexico, it is considered useful, in addition to the detailed field documentation, to present the evidence of independent observers concerning the in situ associations. Comments by three such independent scientists, R. S. MacNeish, F. A. Petersen, and H. M. Wormington, on the character of the evidence at Valsequillo are quoted.

Binford's specific postulate that archaeological corncobfilled “smudge pits” of the eastern United States were utilized for smoking hides is challenged as being too narrow, and an additional function is postulated, namely, that they were also used in some areas for smudging the interiors of ceramic vessels. Additional references to their archaeological occurrence are also presented, and it is argued that all of these features postdate A.D. 1000.

A survey of a cenote in Sacalum and the Chilam Balam of Chumayel suggests strongly that Sacalum, Ticul, and probably Tixtohilcheen have been a source of the mineral attapulgite used variously in the manufacture of Maya Blue, for medicinal purposes, and as a pottery temper.

Euler's (1968) criticisms of Jett’s "criticisms" are based largely on misinterpretation of Jett (1968). No political cause is espoused in Jett nor is criticism of colleagues the motive for the article. Enumeration of sites overlooked by various surveys was to show how “… the number of known sites has increased with each survey, how continuing revision of interpretation has been necessary, and how survey work is by no means complete…” (Jett 1968), suggesting that long-term work in an area adds more to knowledge than does work limited in time by reservoir construction. Jett does not criticize popular publication per se; however, caution in revealing locations of incompletely excavated sites is recommended.

Atlatl engaging spurs are recorded from most regions of California and are placed provisionally into three types. Type I, “Snake head,” is composed primarily of specimens made of stone and has Central California Early horizon, Martis complex, and Early-Transitional Lovelock affinities. Type II, “Acorn,” is composed primarily of bone or antler specimens with Central California Middle horizon affinities. Type III may be a variant of Type I and has, as yet, undefined cultural and temporal affinities.

An Olmec mask from northern Petén is a very rare witness to Olmec contact with the Maya lowlands (Central area).