Ida Cassa Heffron, Lessons in chalk modeling: The new method of map drawing (1900)
“ On seeing a relief map of one of the continents for the first time, there arises a sense of wonder and surprise, and as the realization dawns upon one of the continuity of the great mass of land represented, with its altitudes and depressions, and that it is one stupendous aggregation of soil, rock and vegetation, surrounded by a great expanse of water, a feeling of awe and astonishment is awakened. ”
