Hawaii: A Lincoln Document, and a Mystery

From the AP: A document with Abraham Lincoln’s signature and dated Sept. 22, 1862, has been found in the Hawaii State Archives, but no one seems to know how it got there. A project of the Abraham Lincoln Presidential Library and Museum in Illinois has confirmed its authenticity. It orders the secretary of state to affix the seal of the United States to his “proclamation of this date.” The Emancipation Proclamation was issued on that date. The document appears to have been at the archives since at least 1935. In the 1860s, Hawaii was an independent kingdom.

Anyone care to suggest how the document arrived at the Hawaii State Archives?