Here is a scratch pad of mapping, data, history projects related to Boston. I will continually update it as I come across additional projects
Tufts’ Boston Streets Project (2004) http://dca.lib.tufts.edu/features/bostonstreets/
Collection consists of 11 Boston City directories converted in to structured data, >3000 images from Bostonian Society photographic collections, and browse-able atlases from 1874, 1898, and 1928. “Orthographic images of modern day boston, and vector data from the boston redevelopment authority and MassGIS are used to ground the Boston in its modern context:”
Mapping Boston at HistoryPin
https://www.historypin.org/en/person/77090
Mapping Boston’s Religions, 1800-1880: Brandeis Omeka project
https://omeka.lts.brandeis.edu/neatline/show/mapping-bostons-religions
USGS Historical Coastal Topographic Map Image
City of Boston’s Enterprise GIS system https://www.cityofboston.gov/maps/
It also has a great indexed property viewer. Each parcel in the city has a number http://app01.cityofboston.gov/parcelviewer/
Boston Redevelopment Authority’s links to available current maps:
http://www.bostonredevelopmentauthority.org/research-maps
Massachusetts Historical Society digitized maps, 1648 (depicted)- 1814
https://www.masshist.org/online/massmaps/list.php
Boston Public Library’s Leventhal digitized map collection
http://maps.bpl.org/view_collection
Boston Area Research Initiative (via the Dataverse)
http://www.bostonarearesearchinitiative.net/Boston-Data-Portal.php
Metro Boston DataCommon: An interactive data portal and mapping tool with information about the region’s people, neighborhoods, infrastructure, and environmental resources.
http://metroboston.datacommon.org/
Boston Public Library’s open data initiative
https://www.boston.gov/innovation-and-technology/open-data-open-knowledge
MISC:
Boston Displacement mapping project
http://www.bostondisplacement.org/maps/tenant-stories/#/east_boston?_k=gbedaq
Citizen Noise sensing project