22 / Maryland at a Glance Maryland Manual 1996-1997

1863, June Confederates invaded Maryland en route to Gettysburg
1864, April 27-Sept 6 Constitutional Convention of 1864
1864, July 6 Hagerstown held for ransom by Confederates
1864, July 9 Frederick held for ransom by Confederates
1864, July 9 Battle ofMonocacy
1864, Oct 12-13, 29 Gov. Bradford declared Third State Constitution adopted after soldiers'
vote was added to election totals. A test oath was required of all
voters.
1864, Nov 1 Maryland slaves emancipated by State Constitution of 1864
1867, May 8-Aug 17 Constitutional Convention of 1867
1867, Sept 18 Fourth State Constitution adopted
1876, Oct 3 The Johns Hopkins University opened in Baltimore
1877, Jan 16 Maryland-Virginia boundary demarcated by Jenkins-Black Award
1877, July 20-22 Baltimore and Ohio Railroad strikers riot at Baltimore
1886, Jan 5 Enoch Pratt Free Library opened in Baltimore
1888-1889 Oyster Wars, Maryland and Virginia watermen fought on Chesapeake
Bay
1889, May 7 The Johns Hopkins Hospital dedicated in Baltimore
1890 Australian secret ballot in elections adopted
1893, Oct The Johns Hopkins School of Medicine opened in Baltimore
1894 First child labor law passed
1902 Workmen's compensation law enacted, first such law in U.S.
1902 Compulsory school attendance law passed
1904, Feb 7 Baltimore fire. Seventy blocks in heart of business district devastated.
1909, April 6 Matthew Henson, of Charles County, reached North Pole with Robert
Peary
1915, Nov 2 Referendum and County Home Rule amendments adopted
1916, Nov 7 Executive budget process established by Constitutional amendment
mandating balanced State budgets
1917 Aberdeen Proving Ground, first testing center of U.S. Army, established
1920 Merit system established for State employees
1920, Nov 2 Women voted for the first time in Maryland
1931, March 3 "Star Spangled Banner" adopted as national anthem
1937 State income tax instituted
1937, June 1 City of Greenbelt chartered, a New Deal model community
1938, June National Institutes of Health established in Bethesda
1941, Dec 7 U.S.S. Maryland among naval ships attacked at Pearl Harbor
1944 Blue-baby operation developed at The Johns Hopkins Hospital in
Baltimore, pioneering heart surgery era
1947, July 1 State sales tax instituted
1948 Montgomery became first county to adopt charter form of government
1950, June 24 Friendship International Airport (later BWI) began operation
1952, July 31 Chesapeake Bay Bridge opened
1955, Sept Desegregation of public schools begun
1956 Voting machines used for elections throughout State
1956, Dec Baltimore urban renewal begun
1957, Nov 30 Baltimore Harbor Tunnel opened
1959, May Goddard Space Flight Center opened in Greenbelt
1962, July Baltimore Beltway (I-695) opened through Baltimore County, encircling
Baltimore City
1963, June 11 Cambridge riots. National Guard remained through May 1965