Henry C. Carey to Abraham Lincoln, June 20, 1861
Philadelphia June 20. 1861
Sir
Accompanying this I beg to hand you
a paper containing some of the views
presented in conversation a fortnight since,
and now coupled with others that seem
to me to be, at the present moment, especially
worthy of serious consideration.
Had the policy advocated by Mr
Clay, as embodied in the tariff of 1842,
been maintained, there could have been
no secession, and for the reason that
the southern mineral region would long since
have obtained control of the planting one.
If now maintained -- if measures be
now adopted for enabling the people
of the hill country to profit of our
present tariff -- and if capitalists can
have such assurances of its permanence
as is required for securing the creation
Original documents at the Abraham Lincoln Papers Collection, Library of Congress
http://memory.loc.gov/ammem/alhtml/malhome.html