Source Information
Ancestry.com. Johann Baltasar Kramer, or Baltzer Kramer [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2004.Original data: Kramer, Le Roy,. Johann Baltasar Kramer, or "Baltzer" Kramer : pioneer American glass blower : a record of his known descendants and relatives.. Chicago, Ill.: Priv. print. by L. Kramer, 1988.
