Mosaic Pieces
Welcome to the complete Maryland Mosaic.
The Mosaic is not presented chronologically but presents a randomized selection of Mosaic Pieces to spark your interest in a particular event or person. If you would like to have a more ordered chronological overview, use the six fixed time period options on the right of the screen to get a more immediate picture of an historical period. You can also explore by county or by category. Our predefined categories, tags, counties and chronological brackets will help you see links between the Pieces.
The collection has over 140 firsts, including events, people, places, objects, documents or buildings that are unique to Maryland and to the nation. The Mosaic is part of Maryland’s contribution to the U.S. 250th anniversary in 2026. It covers the period from 1776 to the present. You will find at least one Piece for every county and Baltimore City, making this a statewide project.
John Hanson, native of Maryland, is the First President of the Confederation Congress.
John Hanson, Maryland native, is the First President of the United States in Confederation Congress Assembled in 1781 after Maryland ratifies the Articles of Confederation, the first US Constitution.
John Brown hides out at Kennedy Farm, preparing to attack Harpers Ferry
John Brown leaves his 1859 hideout at the Kennedy Farm in Washington County, crosses Potomac with party of 22 to raid the Harpers Ferry Arsenal, intending to create a slave rebellion.
Jewish men gain rights of citizenship
“Jew Bill” legislation is passed by the Maryland Assembly in 1826, giving Jewish men all the rights of citizenship equal to Christians. Thomas Kennedy of Hagerstown is the tireless sponsor.
James C. Pennington, publishes “The Origins and History of Colored People”
James W.C. Pennington, born enslaved in Queen Anne’s County, publishes the first history of African Americans in the US in 1841.
Isaac Myers forms a trade union for Black workers
Isaac Myers purchases a dockyard to employ Black workers and forms them into a caulker’s union in 1866. He is invited to the National Labor Convention in 1869. Ultimately, discrimination forces his union out of the national union.
Ice Cream industry begins
Dairyman and abolitionist Jacob Fussell invents the ice cream industry in 1851 in Baltimore. Looking for ways to use the extra cream in his dairy business, he sells ice cream to Baltimore. Fussell’s original ice cream wagon is in the Baltimore Museum of Industry.
Hospital No.1 in Frederick sees action every day of the Civil War
Hospital No. 1 in Frederick becomes most innovative hospital in caring for large numbers of wounded during the duration of Civil War, 1861-5.
Henry Highland Garnet, leading Maryland abolitionist, opposes non-violence
Henry Highland Garnet, Black Maryland abolitionist who opposes the tactics of Frederick Douglass, delivers a fiery abolitionist speech, “A Call to Rebellion”, to the National Convention of Colored Citizens in 1843.
Henrietta Lacks creates medical history
Henrietta Lacks, an African American woman living in Baltimore, unknowingly becomes a major contributor to medical research after her death in 1951.
Harriet Tubman, A Moses to her People
Harriet Tubman escapes slavery with two brothers in 1849. Subsequently she leads 13 more escape missions, rescuing 70 individuals and she participates in Civil War military engagements in South Carolina.
Gustav Brunn, German immigrant, develops Old Bay seasoning
Gustav Brunn, German immigrant, rescued from a concentration camp, arrives in Baltimore in 1939 with a spice grinder. He develops a popular seafood seasoning mix, names it after a Chespeake Bay steamer, and sells the formula for Old Bay to McCormick & Co.
Greenbelt, largest and most successful of the New Deal towns
Greenbelt opens in 1937 and becomes the largest and most successful of New Deal “greenbelt” towns. It becomes a model for others suburbs.
Governor Thomas Holliday Hicks preserves Maryland from secession
Governor Thomas Hicks, slave owner, Know Nothing and anti-secessionist, moves the Maryland Assembly in 1861 to Frederick and leads them to vote against secession. The vote ensures that the national capital is not surrounded by Confederate States.
Gloria Richardson negotiates end of Civil Rights demonstrations in Cambridge
Following civil rights demonstrations in 1963, Gloria Richardson becomes the SNCC negotiator with US Attorney General Robert F. Kennedy. They sign the Treaty of Cambridge, ending segregation in schools and housing which is ignored by locals.
Georgetown College sells 272 enslaved individuals from Southern Maryland plantations
Georgetown College, originally located in MD, arranges sale of 272 enslaved people in 1838 from its Southern MD plantations to Louisiana buyer for $115,000. It is among the largest and best documented slave sales in US history.
George Washington resigns his military commission, changing the course of history.
George Washington resigns his Army commission to Congress in the Annapolis State House in 1783, moving the new country away from dictatorship and toward civilian control of the military.
