This collection of records from the early history of Connecticut is housed at the University of Connecticut and was made possible through a cooperative effort of The University of Connecticut Libraries with support of the Mashantucket Pequot Museum & Research Center and the Connecticut State Library. This collection is from Connecticut (Colony). The Public Records of the Colony of Connecticut, from April 1636 to October 1776 ... transcribed and published, (in accordance with a resolution of the General assembly). Hartford: Brown & Parsons. 1850-1890. 15 vols.
If you choose to browse the collection, the index is quite extensive and arranged by surname and keywords. The search feature is limited but allows you to search for a specific date or volume and page number.
Here's the link to the collection: