- Cornish Colony Museum Foundation Featuring the original art of Maxfield Parrish MAXFIELD PARRISH HIGHWAY The New Hampshire Department of Transportation early in June installed the four new signs along Route 12-A to designate the local portion of the highway as the Maxfield Parrish Highway , which extends from the Plainfield/Lebanon border through the village of Plainfield, past Maxfield ...www.almagilbert.com