Sparks, Joseph, 1896-1975, Federal Art Project (Mich.), and United States. Works Progress Administration., “Pine Tree in Michigan, nearly timber time,” Digital Collections, accessed February 17, 2025, https://digitalcollections.library.gvsu.edu/document/25030.
The Pine Tree in Michigan depicts the drama of Michigan's pine woods in twenty-four block prints carved by the artist from his original sketches. Block print no. 9, listed in index of illustration as "nearly timber time."