Formal Principles
nNot merely topographic but interpretive and poetic views of nature
nFormal composition and attention to detail
nDepictions of harmony in nature
Developing taste for landscape came in part from European models (Claude Lauren) as well as from  an evolving sense of nationalism in literature and art
Sense of history

Note also that James Fenimore Cooper, Catherine Maria Sedgwick, Lydia Maria Child “Chocorua’s Curse” formed the basis for some paintings.