Thomas Hart Benton. Free
frank "Free Thomas H. Benton" as Senator on folded cover to
Gholsonville P.O. Va., neat "St. Louis Mo. Oct. 23" circular datestamp,
some waterstaining at top, small tear and repair at bottom, otherwise Fine,
Benton was the first Senator to serve for 30 consecutive years (Image) 
Aaron Burr. Free frank
"A. Burr" as Vice President under Thomas Jefferson on 1801
autograph letter initialled, to Timothy Green in New York, faint
strike of Oct. 28 circular datestamp, light vertical file fold and some
minor overall wear, Very Fine (Image) 
John C. Calhoun.
Representative and Senator from North Carolina, defender of the South,
slavery and states' rights, Secretary of War under Monroe and Vice
President under Adams and Jackson, free frank "free J.C. Calhoun" as
Secretary of War under Monroe on 1822 folded cover to Capt. John Le Conte
of the Corps of Engineers in New York, ms. "Dept. of War", brownish
"Washn. City May 13" circular datestamp and matching "Free" handstamp,
light vertical file folds, Very Fine (Image) 
John C. Calhoun.
Representative and Senator from North Carolina, defender of the South,
slavery and states' rights, Secretary of War under Monroe and Vice
President under Adams and Jackson, free frank "free J.C. Calhoun" on
cover addressed in his hand to Francis Wharton in Philadelphia, red
"Washington D.C. 21 Dec. Free" datestamp, Very Fine
(Image) 
R. K. Call. Free frank
"free R. K. Call" as Florida territorial delegate on folded
cover addressed in his hand to Fayetteville N.C., fresh and Very Fine (Image) 
Henry Clay. Thee covers,
incl. two free-franked "Free H. Clay" and sent to the Hon. Joseph
Nicholson in Baltimore, third is cover addressed to Clay bearing Blood's
local stamp paying local postage and sent free thru the U.S. post office,
few faults, Fine-Very Fine (Image) 
David Crockett.
Frontiersman, Congressman from Tennessee, free frank "Free D.
Crockett" on folded cover to Henry Farnam in Concord N.H., red "City of
Washington Feb. 11" circular datestamp and matching "Free" handstamp,
expert restoration does not affect frank or markingsVERY FINE APPEARANCE. A RARE DAVY CROCKETT FREE FRANK AS REPRESENTATIVE FROM TENNESSEE.
This legendary American frontier hero's signature is extremely scarce in any form and of the greatest rarity as a free frank. (Image)
Stephen A. Douglas.
Senator from Illinois, presidential candidate, famous orator and advocate
of states' sovereignty, free frank "free S.A. Douglas U.S.S." on
mourning cover to Charlestown Mass., clear strike of "Washington D.C. 27
Jan. Free" circular datestamp, toned spot from wax seal, Very Fine, scarce
free frank, this style of datestamp was in use in 1852, the year Douglas's
first wife passed away, Douglas defeated Lincoln in the race for the Senate
in 1859, though Lincoln would go on to defeat Douglas in the Presidential
election in 1860, ex Hessel (Image) 
Edward Everett.
Congressman and Senator from Mass., overseer of Harvard University, best
remembered for speaking 2-1/2 hours at Gettysburg before Lincoln's address,
Feb. 17, 1832 folded letter addressed to him and sent free under his
franking privilege as Member of Congress in Washington D.C., red "Somerset
Feby. 19" oval postmark with date in ms., matching "Free" handstamp, the
sender discusses Calhoun's Doctrine of Nullification in South Carolina, an
early break with the Union and an example of the Doctrine of State Rights:
"Slavery and Nullification are fit companions and will soon prepare the
delightful regions of the South for a scare upon which will be inacted the
bloody and heartsickening tragedy of St. Domingo.", fresh and Very
Fine, scarce early letter regarding State vs. Federal doctrines (Image) 
Edward Everett.
Congressman and Senator from Mass., overseer of Harvard University, best
remembered for speaking 2-1/2 hours at Gettysburg before Lincoln's address,
Oct. 28, 1830 autograph letter signed from Paris, France to Charlestown
Mass. and forwarded to Washington D.C., red "New-York Dec. 20" circular
datestamp and matching "Ship" handstamp, well-struck oval "Charleston Mass.
Dec. 25" postmark with date in red ms., originally rated "20-3/4" but
crossed out and marked "Free" in Charlestown, contents discuss sentiment in
Paris after the July Revolution and that the public feels that Lafayette,
as Commander of the National Guard, is getting too old, light vertical file
fold, Very Fine, unusual usage, the recipient should have been charged
postage on a letter originating overseas, however, in what must have been a
burst of Christmas spirit the rating was crossed out and nothing was
charged, so this was sent entirely free from Paris to Washington D.C. (Image) 
William Graham. Senator
from North Carolina (1840-1843), Governor of North Carolina (1845-1849),
Secretary of the Navy (1850-1852), free frank "Free W.A. Graham Sec.
Navy" on blue folded cover to New York, blue "Washington RailRd.
Sep. 28" circular datestamp, Very Fine, scarce route agent marking,
Graham's tenure as Secretary was only two years
(Image)