Other work of Euler would eventually become part of graph theory, e.g., the relation Graph HT ht connecting the number of vertices, faces, and edges of certain polyhedra and some lesser known polyhedra enumeration results [[9], Section 5]. The most revelatory experience of my undergraduate mathematics degree was a writing course offered by James Vick. The class readings included the recent Dover edition of Saaty and Kainan's book [[18]] on the "assaults and conquest" of that graph theory problem and Leonard Gillman's celebrated guide to mathematical writing [[5]]. But early graph theory was hardly dominated by American researchers, as evidenced by two "Graph Theory in Europe" interludes. [Extracted from the article]