For example, “more than four decades” have passed since 1930 (p. 23; compare p. 26) and “more than a quarter century” since 1948 (p. 95); Landsberger (who died in 1968) is still alive on p. 56; and the Abu Salabikh tablets (excavated in 1963 and 1965) were dug “more than a decade ago” (p. 101).