The CTGenWeb project has Online Brooklyn Vital Records from the Barbour Collection. Online Brooklyn Vital records include:

Brooklyn births, marriages, and deaths from 1786 to 1850, A-B  C-D  E-H  I-L  M-P  R-S  T-Z

The Barbour Collection was a project to collect Connecticut town vital records up to around 1850. It’s available on microfilm and at a couple of subscription sites and bound volumes of the collection can be purchased for specific areas of interest. This site offers some transcriptions of the Barbour collection for free.