Cartogram

1888 October, Dewey, Davis R., "Elementary Notes on Graphic Statistics", in the Massachusetts Institute of Technology Technology Quarterly, Volume II Number 1, published by the students (1888–1889), p. 99, […] whether, however, two states with these respective ratios do not consequently sufficiently differ […] as to warrant distinction in the cartogram, is open to question.

1895, "Book Notes", in Academy of Political Science (U.S.) and Columbia University Faculty of Political Science, Political Science Quarterly, Volume X Number 3, Academy of Political Science (1895), p. 560, The fifth cartogram illustrates the criminal statistics for the period 1882-91, which are of unusual interest because […]