Tag Archives: maps

Maryland State Archives

The Maryland State Archives is the historical agency for Maryland and serves as the central depository for government records of permanent value. Records date from the founding of the colony in 1634 to the present. Included in the Archives’ holdings are colonial and state executive, legislative, and judicial records; county probate, land and court records; church records; business records; publications and reports of state, county and municipal governments; and special collections of private papers, maps, photographs, and newspapers.

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Historical Marker Database

Historic Annapolis MarkerThe Historical Marker Database is an illustrated searchable online catalog of historical information viewed through the filter of roadside and other permanent outdoor markers, monuments, and plaques. It contains photographs, inscription transcriptions, marker locations, maps, additional information and commentary, and links to more information. Anyone can add new markers to the database and update existing marker pages with new photographs, links, information and commentary.

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Central Maryland Home Sales

Baltimore Sun LogoThe Baltimore Sun web site recently added a useful utility to search for and display home sales in central Maryland on an interactive Google map. You can search and sort by price range, ZIP code, type of home, and time frame. Homes sold are shown on the map as dots color-coded by sale price. You can click on the dots for more information about each house. And, of course, you have all the power of Google maps, such as panning, zooming, and satellite, and hybrid map views.

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Anne Arundel County crime map

Arundel Crime Map

Arundel Crime Map

The Baltimore Sun has just released an interactive crime map of Anne Arundel county. The map combines automatic weekly feeds from the Arundel Police communications office with the power of Google Maps. The resulting visualizations allow citizens quick and easy access to hard crime data. A search form allows you to specify type of crime, time period, and location. Crime incidents show up as markers on the map which expand to give more detailed information when clicked.

Peter Hermann’s blog also has a writeup of the new system: “The information is out there; assembling it can be quite a task. I’m of the position that the crime data should come from the police. This is public information and there is excuse in this day an age not to post it all on the Internet, almost as it comes in.”

CrimeReports.com also has a similar system which provides the last 60 days of “Computer Aided Dispatch (CAD)” data generated by calls for service. The disclaimer states that the map does “not provide specific information related to how a crime was committed or who was involved.  The information provided will only allow users to get a general sense of the types of calls for service that have been generated through the CAD system, the volume of calls for service received, and the classification of those calls.  To ensure that victim, witness, or suspect information is not compromised, calls are mapped depicting only the general block number of the incident, as opposed to the specific address (for example, 1200 Main Street instead of 1234 Main Street).”

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Archeology in Annapolis Web GIS

A new web tool developed by the University of Maryland called Preservation Search offers immediate access to interactive maps, photos and text of the Annapolis historic district. It provides far greater digital detail and comprehensiveness than in almost any other city.

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