I found a link to the Secretary of State's "Database of Illinois Death Certificates, 1916–1950" online at the link below. They also give info on how to get copies of the actual death certificates:

http://www.cyberdriveillinois.com/GenealogyMWeb/idphdeathsrc...


I found two BOULETs mentioned in their index:

BOULET MARIE L F/W UNK 6006131 1927-02-18 COOK CHICAGO 27-02-20

BOULET WILLIAM J M/W UNK 6029123 1934-10-24 COOK CHICAGO 34-10-25

If you have BOULET data to share, please do so here. It may help another researcher somewhere down the line.... Thanks!