Study for The Fourth Liberty Loan poster

[poster headline in graphite]: The Fourth / Liberty Loan / Campaign - Third Federal Reserve; [above tree illustrations in graphite]: The tree / of / life; [below illustration in graphite]: Buy Liberty Bonds for the Breaking of all other Bondage / With your Gold, pave the Way / For the Unity and Life of the World...; [bottom left in red ink]: stamped monogram initials; [bottom right in red ink]: stamped signature
The illustration replicates Oakley's personification of Unity from the mural series The Creation and Preservation of the Union, Senate Chamber, Harrisburg