| | Post Office | County | Date Established/Discontinued | Postmaster | Cover Link |
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| Back Bone | Sebastian | 1856-1866 | Dennis Trammell | |
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| Barfield | Mississippi | 1856-1925 | A.J. Posey | |
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| Barkada | Drew | 1851-1875 | John Hussey | SRumsey_Sale25_Lot1533-Paid 10.jpg |
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| Barney's | Phillips | 1850-59, changed to Gillian's Landing in CSA records | Richard Jones | |
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| Bartholomew | Chicot, to Drew Co. 1846 | 1832-1873 | E.B. Williams , James Lowery (8-20-61) | |
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| Batesville-PAID 5 uprated to 10 | Independence | 1824-Present | Reuben Harpham, D.C. Montgomery (7-25-61) | jkaufmann_sale137_lot34-PAID 5 up to 10.JPG |
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| Batesville-PAID 10 arc | | | | rkaufman_sale71_lot64-PAID 10 arc.jpg |
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| Batesville-PAID 10 circle | | | | robert_kaufmann_sale39_lot601-PAID 10 Circle.jpg |
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| Bayou Meto | Pulaski | 1835-1876 | Patrick Fenton | |
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| Bee Branch | Van Buren | 1860-Present | W.D. Neale | |
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| Beech Bluff | Dallas | 1850-1867 | Bartlett Barbee | |
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| Beech Creek | Clark | 1852-1866 | Sam'l Thompson (11-23-61), HJP Horne (6-12-63, C.A. Horne (4-8-65) | |
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| Beech Grove | Phillips | 1849-1866 | Salathiel Sherrod (8-20-61) | |
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| Belfast | Saline | 1854-1955 | Wm Mack, Hastings Poe (8-20-61) | |
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| Bellville | Sevier | Changed from "Red Colony" 1860, disc 1867 | Larkins Bell (8-22-61), James Bell (12-22-62) | |
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| Belmont | Crawford | 1848-1905 | Samuel Roberts | |
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| Benbrook's Mills | Izard | Changed from "Cross Plains" 1850, disc 1867 | Elbert Benbrook (8-22-61) | |
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| Bennett's Bayou | Fulton | Changed from "Bennett's River, 1857, Disc 1880 (CSA disc 2-25-62) | William S. Sapp | |
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| Bennett's River | Fulton | 1848/1873 | John W. McMasters (8-22-61) | |
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| Benton | Saline | 1836-Present | A.R. Hockersmith (12-28-61) | Rsiegel_sale_850_lot_5097.jpg |
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| Bentonville | Benton | Changed from "Osage", 1841 - Present | G.G. Epperson (12-14-61) | |
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| Berlin | Ashley | 1856- Name changed to Matoka in 1880 | Frank Holtshoff, John Rabb (8-20-61), H.H.Pool (3-29-62), Wm H.P. Pool (7-19-62) | |
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| Berryville | Carroll | 1852-Present | Daniel S. Hayter (11-30-61) | |
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| Bethel | Pulaski | 1860-1866 | Simon P. Tate (8-22-61) | |
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| Big Bend | Polk | 1853-1892 | Lewis Bolin | |
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| Big Flat | Searcy | 1854-1865 | Wm. H. McMahan | |
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| Big Fork | Polk | 1854-1972 | Harris Cabler (8-22-1861), Stephen C. Bates (10-14-61) | |
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| Big Pond | Baxter | 1858-1879 | Thomas Goforth (8-22-61) | |
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| Big Spring | Izard | 1853-1867 | Jesse B. Pemberton (8-22-61) | |
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| Billingsly | Washington | 1854-1887 | Lemuel G. Bassore | |
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| Birnum Wood | Lafayette | 1860-1866 | Dotus W. Harris (8-22-61), Mary Smith (10-29-61) | |
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| Black Jack | Scott | 1851-1877 | Wilson J. Lewis | |
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| Black Oak | Independence | 1858-1866 | Willliam S. Nail | |
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| Black's Ferry | Randolph | 1852-1866 | John H. Imboden (8-20-61), Margaret Imboden (11-22-61) | BRobertsCollection Blacks Ferry Paid 5 cts.jpg |
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| Bland's | Saline | 1846-1928 | J.S. Hutchinson | |
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| Bledsoe's Landing | Crittenden | 1849-1866 (name changed to Council Bend) | Leonard Dunn, T.S. Craig (1-24-62) | |
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| Bledsoe's Shop | Bradley | 1860-1866 | J.M. Bledsoe | |
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| Bloomer | Sebastian | 1851-1923 | Andrew J. Brooks (8-22-61). Discont in CSA 3-25-62. | |
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| Bloomington | Benton | 1858-1881 | G.H. Holcomb | |
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| Blue Mountain | Izard | Changed from Rich Woods 1837 - 1886 | Amos Boyles | |
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| Bluffton | Yell | 1854-Present | John H. Maxwell, Abraham B. Maxwell (8-22-61) | |
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| Boone's Grove | Washington | 1851-1869 | B.F. Boone | |
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| Booneville | Scott | 1837-Date | Welburn R. Lee | |
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| Boonsborough | Washington | 1843-1901 | E.W. McClure (8-22-61) | |
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| Borland | Newton | 1849-1867 | Elbert C. Wade | |
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| Boston | Washington | 1858-1868 | Alexander W. Kennon | |
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| Branchville | Drew | 1858-Changed to Star City 1872 | S.J.D. White (8-22-61) | |
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| Brawley | Scott | 1860-1931 | George W. Jones | |
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| Brazil | Saline | 1853-1924 | Moses Brazil | |
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| Breckinridge | Sebastian | 1858-1866 | William Bunch, B.F. Britton (8-22-61) | |
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| Bright Star | Lafayette | 1860-1908 | Samuel W. Mays (8-22-61), A.F. Bailey (10-31-61), David C. Moore(9-15-64), George Brackman (12-1464) | |
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| Brocktown | Pike | 1851-1911 | Jackson Brock | |
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| Brook's | Jefferson | 1859-1866 | Daniel Taylor, H.M. Wilkinson (10-14-61) | |
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| Brownstown | Sevier | 1846-1868 | Babelmandel Baggarly, A.C. Pauley (8-22-61) | |
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| Brownsville | Prairie | 1851-1868 | William E. Raulston, F.M. Griffins (8-20-61) | jkaufmann_sale137_lot36.jpg |
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| Brunner | Sebastian | 1852-1867 | James G. Wooten, John Jones (10-31-61) | |
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| Buchanan | Washita | 1857-1875 | A.W. Bacchus, Sr. (8-20-61) | rkaufman_sale71_lot66.jpg |
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| Buck Horn Paid 5 | Independence | 1853-1882 | | RSiegel_Sale850_Lot5098 Buck Horn PAID 5 in Circle.jpg |
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| Buck Horn Paid 10 | | | | RSeigel_Sale907_Lot2542 Buck Horn PAID 10 In Circle.jpg |
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| Buck Horn due 10 circle over 5 circle on US Stationary | | | | Buck Horn due ms 10 circle over 5 circle US Stationary.jpg |
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| Buena Vista | Washita | 1848-1968 | D.L. Reid | |
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| Buffalo | Washita | 1846-1866 | James A. Norris | |
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| Buffalo City | Marion | 1848-1896 | Ambrose G. Cochran (8-22-61), Anson Clark (10-14-61) | |
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| Burrowsville | Searcy | 1857-1867 | William M. Hays (8-22-61) | |
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| Butler | Desha | 1858-1866 | Oliver Cornwell | |
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| Byrd's Springs | Jefferson | 1857-1872 | John C. Newton | |