Post, based on the increase of 2,357,000 in the population of the U.S. from 1940 to 1950. The first recorded use of "baby boomer" is in a January 1963 Daily Press article by Leslie J. Nason describing a massive surge of college enrollments approaching as the oldest boomers were coming of age. The Oxford English Dictionary dates the modern meaning of the term to a January 23, 1970, article in The Washington Post. Date range and definitions A significant degree of consensus exists around the date range of the baby boomer cohort, with the generation considered to cover those born from 1946 to 1964 by various organizations such as the Merriam-Webster Online Dictionary, Pew Research Center, U.S. Bureau of Labor Statistics, Federal Reserve Board, Australian Bureau of Statistics, Gallup, YouGov and Australia's Social Research Center. The United States Census Bureau defines baby boomers as "individuals born in the United States between mid-1946 and mid-1964". Landon Jones, in his book Great Expectations: America and the Baby Boom Generation (1980), defined the span of the baby-boom generation as extending from 1946 through 1964. Others have delimited the baby boom period differently. Authors William Strauss and Neil Howe, in their 1991 book Generations, define the social generation of boomers as that cohort born from 1943 to 1960, who were too young to have any personal memory of World War II, but old enough to remember the postwar American High before John F. Kennedy's assassination. In Ontario, Canada, David Foot, author of Boom, Bust and Echo: Profiting from the Demographic Shift in the 21st Century (1997), defined a Canadian boomer as someone born from 1947 to 1966, the years in which more than 400,000 babies were born. He acknowledges, though, that this is a demographic definition, and that culturally, it may not be as clear-cut. Doug Owram argues that the Canadian boom took place from 1946 to 1962, but that culturally, boomers everywhere were born between the late war years and about 1955 or 1956. Those born in the 1960s might feel disconnected from the cultural identifiers of the earlier boomers. French sociologist Michèle Delaunay in her book Le Fabuleux Destin des Baby-Boomers (2019), places the baby-boom generation in France between 1946 and 1973, and in Spain between 1958 and 1975. Another French academic, Jean-François Sirinelli, in an earlier study, Les Baby-Boomers: Une génération 1945-1969 (2007) denotes the generation span between 1945 and 1969.