Historical Markers in
Harford County, Maryland

2008 Restoration of P.B. & W. Railroad Crossing and Later Pennsylvania Railroad Watchman's Shed 509 Electrical Light Display Block Signal A Crucial Connection A Perfect Location Aberdeen 9/11 Memorial Aberdeen Proving Ground Aberdeen Proving Ground Memorial Aberdeen Veterans Memorial Adding On Aids to Navigation Fog Bell Alfred B. Hilton Alfred B. Hilton Memorial Park American Legion Post No. 47 America's 25th Earth Day Anchors Annie McGann Cumpston Attack at Frenchtown Bel Air Bel Air Berkley Crossroads Birds by the Bay Black Horse Tavern British Landing Built 1898 Liriodendron Calvary United Methodist Church Capt. Angus Greme Capt. Anthony J. Synodinos & 1st Lt. Edward G. Conrad, Captain John Smith Carter-Archer House Church of the Holy Trinity Churchville Churchville Presbyterian Church Cokesbury College Colony Of Maryland Concord Point Light Station Concord Point Lighthouse Concord Point Lighthouse Grounds Conowingo Count Rochambeau’s Troops Crown Stone Mile 40 Dangerous Waters Daybreak by Richard Goldsborough Brink Dedicated in Honor Deer Creek Harmony Presbyterian Church Did you Know? Did You Know? ENIAC Enjoy the Havre de Grace Promenade Ernest Burke Explore the Chesapeake Flag Pole Memorial Frederick Ward Park Gilmor's Raid Gold Star Families Memorial Monument Gov. William Paca Great 8 Hall’s Cross Roads Harford County Sheriff's Office Harford Town Harry Gilmor's Raid Harry Gilmor’s Raid Havre de Grace Havre de Grace Graw Havre de Grace Racetrack Havre de Grace War Memorial Heavenly Waters Cemetery Heirloom Hendon Hill Cemetery Hero's Reward Historic Bel Air Historic Bel Air Home Base Home of Refuge How a Lock Works In Grateful Recognition In memory of Ernie Tyler Invasion at Dawn James B. Baker House Jerusalem Mills Joesting - Gorsuch House John O'Neill Joppa Town Keeper of the Light Keeper's House Keziah's Diary King and Queen Seat Ladew Topiary Gardens and Pleasant Valley House Lafayette at Colonel Rigbie’s House Lafayette's Tour Lower Susquehanna Heritage Greenway Lure of the Chesapeake Luxury on the Bay Ma & Pa Heritage Trail MA & PA Heritage Trail Ma & Pa Heritage Trail Ma & Pa Railroad Ma & Pa Station - Forest Hill MA and PA Heritage Trail Major General Marquis De LaFayette Maryland and Pennsylvania Railroad Mason and Dixon Line 40th Mile Stone Matilda O'Neill Home Medical Hall Milestone Miller's House Nineteenth Century Travel No Respect Nun Buoy Out of the Flames Peach Bottom Slate Region Pensell Propeller Post U.S. Lighthouse Service Use Principio Destroyed Prospect School River Crossing Rochambeau Plaza Rock Run Rock Run Landing Rock Run Mill Rumsey Mansion Sacred to the Memory of the Men of Harford County Saint Ignatius Church Screaming Rockets Site of Old Baltimore Site of the Upper Jericho Saw Mill Site of “Old Baltimore” Sophia’s Dairy Spesutia Church Spesutia Island Spesutia P. E. Church Spring House Springhouse Springhouse Stafford Flint Furnace State Of Maryland State of Readiness Surprise Attack Susquehanna Hotel Susquehanna Lower Ferry Susquehanna Lower Ferry Susquehanna River Crossing Susquehanna River fishing Susquehanna State Park The Bayou The Boyer Family Shad Shack The Concord Point Light Keeper’s House and Property, 1827-1920 The Hays House The Keepers The Lafayette Trail The Lock House The Norris House The point where the Susquehanna River meets the Chesapeake Bay The Susquehanna and Tidewater Canal This is a Section of “The General’s Highway” This Tablet This Wye Oak Toll House & Tidewater Canal Tollhouse and Covered Bridge at Rock Run Torrey C. Brown Rail Trail Tudor Hall Under Attack Veterans Memorial Votes for Women War in the Chesapeake Welcome to Our Wetland Home White Hall "O! say can you see..." "O! say can you see…" "The Bush Declaration" "The Door" "The People of Havre de Grace" “Constant Friendship” “Indian Spring” “Olney”