Frederic Rodrigo Gruger ( 1871 - 1953 ) was an American painter. Frederic Rodrigo Gruger s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 45 USD for Three boys in interior, one shining another's shoes. in 2005 to 2074 USD for One day the old woman warned us there was a gang of bushwhackers operratin' down the road a piece in 2011