Searching records in New Haven, Connecticut #records

Shelly Crane

I am researching my husband's maternal family who immigrated to New Haven (and surrounding areas), Connecticut in the 1890s and remained for several generations.  Anyone have suggestions locating  older death, birth, marriage certificates, naturalization records, obituaries?   Many of his relatives are buried at  Congregation Bnai Jacob Cemetery. Is anyone going there by chance, who can take pictures?
His Great Grandfather was Israel Noah Halper  (born 1860s and died 1915) married to Rose Nee Mattes.    I believe he was the son of William and Hannah, who also lived in New Haven.  Trying to prove that as my first step.  
Any suggestions will be greatly appreciated.
Thank you!
Shelly Levin
Northern California

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