Edge-transitive tetravalent graphs
The collection provides information about connected edge-transitive graphs of degree 4. This second edition shows graphs of up to 150 vertices. It is known to be incomplete in a few ways. We hope, eventually, to expand the range up to 512 vertices (to include Bouwer's generalization of the Gray Graph), and we invite your comments and contributions.
The Census is a joint work of Steve Wilson at Northern Arizona University, and Primož Potočnik Department of Mathematics, University of Auckland, New Zealand (source).