Leonard Lanson Cline (11 May 1893-15/16 January 1929) was an American novelist, poet, short story writer, and journalist.
Born in Bay City, Michigan, he attended the University of Michigan, was married in 1913, published his first book of poetry, Poems, in 1914 and worked for The Detroit News 1916-1922. In 1922 he took a position at the Baltimore Sun.
His writings appeared in a variety of magazines--The New Republic, The American Mercury, The Smart Set, The Nation and Scribner's Magazine. His journalist work appeared in the Baltimore Sun, The New York World, The Chicago Daily News, The New York Herald Tribune, and St. Louis Post-Dispatch.
The Viking Press published his first novel, God Head in 1925. It deals with the Kalevala legends in a modern society. The critic Laurence Stallings wrote: "It is the most tempestuous novel of many seasons. It would be eminently fair to believe that Leonard Cline could write rings around a half dozen of our ten best novelists." (The New York World, 21 October 1925)
In 1926 he published the light-hearted Listen, Moon!, which deals with a professor assuming the role of a pirate along the Chesapeake. Time’s reviewer wrote of it, "the commonplace has suddenly, with sublime and innocent vulgarity, comic pedantry, unflagging ebullience, gone stark, raving romantic.... The contrasting humor and whimsy of [Cline’s] new novel is as astonishing as it is joyous."
In 1927 he published The Dark Chamber, arguably his most famous work. It was described by H.P. Lovecraft in his Supernatural Horror in Literature as "extremely high in artistic stature". A review proclaimed, "he has opened a squamous dungeon of the mind and explored it with the erudite perversity of a cheerier, juicier Poe. Like all horror stories it is belittled by its own theatricality yet it remains an amazingly worded orgy of the more unspeakable human propensities." 
Cline was also a translator, translating Thomas Raucat's The Honourable Picnic from the French. His translation of Ramón del Valle-Inclán's La Lampara Maravillosa (The Lamp of Marvels), a book of spiritual exercises, remains unpublished.
In 1927, during a drunken quarrel, Cline shot his friend Wilfred Irwin, who died of his wounds several hours later. Cline was tried and sentenced to a year in prison for manslaughter. He was released after eight months for good behavior. Henry Luce gave Cline a job at Time when he got out of prison. On the evening of 15 January 1929, Cline hosted a party at his New York City apartment to celebrate the sale of a scenario for a play. Cline complained to friends at the party about having chest pains. He was found dead of heart failure in his apartment five days later, not having been seen alive since the night of the party.
- http://www.time.com/time/magazine/article/0,9171,722342,00.html Review of Listen Moon in TIME, August 16, 1926.
- Leonard Cline: La estancia oscura. Ed. Valdemar, 2002. ISBN 84-7702-379-4
- http://www.time.com/time/magazine/article/0,9171,723278,00.html Review of The Dark Chamber in TIME, September 5, 1927.
- http://www.amk.ca/books/h/Lady_Frozen_Death.var Review of The Lady of Frozen Death.
- Douglas A. Anderson, Introduction to Cold Spring Press edition of The Dark Chamber.
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