Theory and Applications of Graphs : Proceedings Michigan May 11–15 1976 200 years of graph theory — A guided tour Chromatic number and subgraphs of cayley graphs The multicolorings of graphs and hypergraphs Irreducible configurations and the four color conjecture Numbered complete graphs unusual rulers and assorted applications Cycles and semi topological configurations Graphs with unique walks trails or paths of given lengths Triangular imbeddings into surfaces of a join of equicardinal independent sets following an Eulerian graph Mixed graphs of homomorphisms On chromatic equivalence of graphs On graphs having prescribed clique number chromatic number and maximum degree Domination of undirected graphs — A survey Some extremal problems for simple two complexes Various length paths in graphs Orthogonal groups over GF(2) and related graphs Distance matrix polynomials of trees Odd cycles and perfect graphs Imbeddings of metacyclic cayley graphs On the chromatic index and the cover index of a multigraph Pruning and depth first search Graphs and their degree sequences: A survey The bichromaticity of a tree On diameter stability of graphs Generalized pseudosurface embeddings of graphs and associated block designs Powers of graphs line graphs and total graphs The cartesian product of two graphs is stable A note on a generalized regularity condition Long and short walks in trees Random clumps graphs and polymer solutions Mixed ramsey numbers: Edge chromatic numbers vs. graphs Planar and outerplanar cayley graphs of free groups Coloring restrictions If a hadamard matrix of order 24 has character exactly 2 its transpose is known Cycle lengths in polytopal graphs Subgraph connectivity numbers of a graph Matchings in graphs III: Infinite graphs Steinhaus graphs Packing and covering constants for recursive trees The minimum degree and connectivity of a graph Generalizations of graphical parameters Pursuit evasion in a graph Regularity in tournaments On graphs of embedding range one Non existence of graph embeddings Food webs competition graphs and the boxicity of ecological phase space Hamiltonian persistency is periodic among iterated line digraphs Some problems in ramsey theory Exactly thirteen connected cubic graphs have integral spectra A counting theorem for topological graph theory k Arc Hamilton graphs Hypohamiltonian graphs and digraphs Order preserving embeddings of aographs Circular arc graphs: New uses and a new algorithm Chromatic sums Infinite cayley graphs of connectivity one Edge colorings of graphs — A survey Menger and könig systems.