* "An Essay on the Lives and Works of the Most Eminent British Painters in Miniature" (1815): This work, considered his most important, examines the history of miniature painting in Britain. It features biographies of notable artists and detailed descriptions of their works.
* "A Treatise on Landscape Painting" (1829): A comprehensive examination of landscape painting, offering insights into artistic techniques and the history of the genre.
* "The Observer; Containing a Variety of Original Essays, Literary and Political" (1789): A collection of essays covering a wide range of topics.
* "The British Spy" (1799): A collection of satirical and political writings, often critical of contemporary society.
* "The Jew" (1819): A controversial novel that explores themes of religious prejudice and social inequality.
Cumberland also published numerous poems and essays on a variety of subjects, including travel, history, and philosophy. He was a prolific writer who actively participated in intellectual and cultural circles of his time.
It's important to note that while Cumberland's writings were influential in his time, they are not widely read today. However, his works offer valuable insights into the art, literature, and social concerns of the late 18th and early 19th centuries.