Arizona and Missouri Online Death Certificates
The Arizona Department of Health and the Missouri State Archives have both added the year 1962 to their online collections of death certificates. The year 1937 has also been added for Arizona births. See...
Arizona Deaths 1844-1962 and Births 1855-1937 from the Arizona Department of Health; early years may be spotty
Missouri Death Certificates 1910-1962 from the Missouri State Archives
For a list of more online death certificates see:
Online Death Certificates and Records
Pennsylvania Death Certificates Are Being Digitized
Ancestry and the Pennsylvania State Archives have a partnership to digitize and index Pennsylvania death certificates (1906-1963).
April 2014 Update: Ancestry has now begun putting scanned Pennsylvania death certificates online (fee required). For details see:
Online Pennsylvania Death Records, Indexes and Obituaries
Illinois: Cook County and Chicago Online Images Removed
Unfortunately, FamilySearch has removed digitized images for Cook County, Illinois birth, marriage and death records from their website. However, their online indexes for these records remain. The images were removed for: Cook County Birth Certificates, 1878-1922; Birth Registers, 1871-1915; Deaths, 1878-1922; and Marriages, 1871-1920. For more information see this entry at the FamilySearch wiki: Cook County Death Records
Copies of these records can still be obtained online for a fee from the Cook County Clerk. And the indexes for these records (and for some later years) are still available online. See: Chicago Genealogy Records and Sources on the Internet