There is a publication, "The Family of David Heckenlaible and His Descendants" first written by Edwin D. Heckenlaible in 1976. This was then researched and revised by Sally Volz in 1994. Sally is the great granddaughter of David Heckenlaible, II and Katherina Hieb.
The Family Heckenlauble/Heckenlaible/Heckenlively is a 1998 chronology of the family beginning with Jacob Heckenlauble circa 1745 and Maria Bauer compiled from my father's records plus my own research. My great great grandfather was Reverend Johannes Heckenlaible (probably a cousin of Johannes Heckenlaible) who was the son of George Michael Heckenlaible, I.
We continue to research the connection between the 2 branches of this family