Robert Lopshire

I was cleaning up Robert Lopshire today and there's something I don't understand. Under Also by Robert Lopshire are included One Fish, Two Fish, Red Fish, Blue Fish and Snow... but what did he do on these books? In both cases, no role has been entered, so it just reads "(some editions)." Some quick googling didn't yield anything. Anyone have any ideas, or should he be removed from the "Other authors" on those works?

My guess would be that at some point some Lopshire and Seuss and Eastman books got accidentally combined together because they were packaged together in an omnibus, and when they were fixed the other author data remained on the Seuss book. I vote to just remove it.