Hi, Doreen ,
There is an all-parish index for the city of Hannover church records. You
can find the films numbers on the catalog at FamilySearch.org. It is easy
to use and covers all births, marriages, deaths till about 1874, I believe.
Sonja R. Nishimoto AG
5663 W. 11200 N.
Highland, UT 84003
Email: sonja.nishimoto@gmail.com
My family history blog: http://treeclimbingwithsonja.blogspot.com/
Family blog: http://sonja-grandmasonjasstuff.blogspot.com