If you could see inside / Marie Neurath. New York: Chanticler Press, 1950 (London: Parrish, 1948)
“If you could see inside (1948), the first of the 'Wonders of the modern world' series, was a 32-page book that comprised a series of explanations in words and pictures of something likely to interest curious young minds (..) The seemingly miscellaneous choice of topics was connected through the use of cross sections, thus following through on Otto Neurath's original idea. Marie Neurath ensured that other graphic attributes reflected Isotype principles: omission of unnecessary details, simplicity of shapes, and use of Isotype pictograms as appropriate.”
Christopher Burke, Eric Kindel, Sue Walker, eds.. Isotype: design and context, 1925-1971. London: Hyphen Press, 2013 (p. 401)