Proof copy of the first printing of The Fugitive Slave Act of 1850

Proof copy of the first printing of The Fugitive Slave Act of 1850 consisting of a single sheet of U.S. Government-issued blue stock paper folded quarto to form four pages and printed in black ink. At top a handwritten inscription reads [U.S. Congress. / Fugitive Slaves Act.] The printed text begins [AN ACT / TO AMEND, AND SUPPLEMENTARY TO, THE ACT ENTITLED "AN ACT RESPECTING FUGITIVES FROM JUSTICE / AND PERSONS ESCAPING FROM THE SERVICE OF THEIR MASTERS," APPROVED FEBRUARY TWELFTH, ONE / THOUSAND SEVEN HUNDRED AND NINETY-THREE.].