found: His Geologic map of the Ptolemaeus quadrangle of the moon, 1968.
found: Tectonic and stratigraphic studies in the eastern Great Basin, 1983:CIP t.p. (Keith A. Howard) CIP data sheet (Howard, Keith Arthur; b. 1939)
found: Mineral resources of the Turtle Mountains wilderness study area ... 1987:CIP t.p. (K.A. Howard)
found: USGS web site, March 26, 2024:(Keith A. Howard is a Research Geologist Emeritus at the Geology, Minerals, Energy, and Geophysics Science Center in Menlo Park, CA. Since joining the USGS in 1966, he had a diverse geologic career investigating a wide range of geologic processes. Presently, his reasearch includes volcanology, Colorado River evolution, granite, and extensional tectonics. Education: BS 1961, MS 1962 Geological engineering University of California, Berkeley; PhD 1966 Geology, Yale) - https://www.usgs.gov/staff-profiles/keith-a-howard