The Robertson-Wegner graph is of the four 
-cage graphs, also called
Robertson's cage (Read and Wilson 1998, p. 273). Like the other 
-cages, the Robertson-Wegner graph has 30 nodes. It has
75 edges, girth 5, diameter 3, and chromatic number
4. The Robertson-Wegner graph has automorphism
group order 20.
Note that the graph depicted in Bondy and Murty (1976, p. 238) and labeled "
-cage; The Robertson-Wegner graph"
is actually a different 
-cage, namely the Wong graph.
It has LCF notation signature 
and is illustrated above in its two order-5 LCF
embeddings.
