NASA_NTRS_Archive_19930080806
A NASA Technical Reports Server document from 1920, catalogued by NASA Technical Reports and offered as a technical record for engineers and aerodynamicists. Its single page is a dense set of numbered equations (14 to 16) with integrals, summation limits and a fraction bar, set in plain black type on white. A designer might take from it the rhythm of stacked mathematical notation and the clean typographic spacing of early technical print.
