Check the date on this one

In case you're not familiar with all the rebels of the Hawaiian Revolution, Z.S. Spalding was party to the rebellion. Check the date on this one:

Mr. Seward to Mr. Spalding.

[Confidential.]

No. 42.]   DEPARTMENT OF STATE,
Washington, July 5, 1868.
Z. S. SPALDING, Esq., etc.:
SIR:  Your letter of the 14th of April has been received
and carefully read.The information which you give of the
excitement which is prevailing in Honolulu in regard to
the annexation of the Sandwich Islands is very
interesting.  You suggest a system of proceeding here
with reference to that object which could not possibly,
at the present time, obtain the sanction of any
department of this Government.

Without going into an explanation of the causes for the
condition of national sentiment which temporarily exists,
it is enough to say  that the public attention sensibly
continues to be fastened upon the domestic questions
which have grown out of the late civil war.  The public
mind refuses to dismiss these questions even so far as
to entertain the higher but more remote questions of
national extension and aggrandizement. The periodical
Presidential and Congressional elections are approaching.
Each of the political parties seems to suppose that
economy and retrenchment will be prevailing
considerations in that election and the leaders of each
party therefore seem to shrink from every suggestion
which may involve any new national enterprise, and
especially any foreign one. How long sentiments of this
sort may control the proceedings of the Government is
uncertain, but, in the meantime, it will be well for you
not to allow extravagant expectations of sympathy
between the United States and the friends of annexation
in the islands to influence your own conduct.  You will
continue, however, to write me upon the subject freely
as you have hitherto done.
I am, etc.,
WILLIAM H. SEWARD.