Thanks for sharing the link. Well, Ross Sullivan is still the most likely suspect in the murder of Bates based on other circumstantial info: his younger brother Tim knew Bates socially (dated her, or dated a friend of hers I believe). Ross Sullivan worked at the Riverside library, and also owned a VW beetle, so knew that the engine compartment on the beetle could be accessed from outside the vehicle (her vehicle’s distributor cap had been sabotaged on night of her death). And then there are all of the co-workers at the library who immediately thought that he was the culprit, considering his absence in the days following her murder, combined with ditching the same clothes that he wore virtually every day—until he returned from his absence following her murder. Brand new clothes and different style dress…
As far as him being the Zodiac: his brother contacted LE at some point and expressed concern that Ross could be the Zodiac. And he sure does look just like the composite sketch.