Charlie "O". The Morgan Horse Magazine 1950's.

https://www.allbreedpedigree.com/charlie+o

Sire was Lippitt and dam was Old Midwest Family. 

He had only one registered get, Arona Chère O. 

She was dam of Arona Charlie L, who sired some with some of those breeding onwards. 

Arona Chère O was also dam of Arona Chloe L. who had some foals.