There are three Engh name books that I know of and two that I've seen personally at the LDS Joseph Smith Library in Salt Lake City. The two that I've seen are: SLAETEN ENGH by Norman Eng begining with Peder Pedersen Engh (1730-1785). (LDS call number 929.2481 A1 no.3 - JSMB International Book). It is described "A brief genealogy of the Engh family from Våaler. Østfold, Norway who are descendents of Peder Petersen Engh (1730-1785)."
The other book is: HET GESLACHT IN DEN ENG by door H.J.M. Klute (LDS call number 929.2492 En31k - JSMB International Book at the Joseph Smith Library). Its description is "Descendents of Jan (Baers, b. ca. 1360) of Wijk bij Duurstee, Utrecht, the Netherlands. His great-great grandson, Jacom Gerritszoon (d. 1576?) adopted the name in den Enge/Eng/Engh. Family members settled primarily in the Netherlands."
I have only just heard about the third book from an Engh we just met. He says it was written in 1996 and I'm waiting for a reponse from him about sharing contact information and about this book.
We are looking for information about Aksel Martin Alexander (Aleksander) Engh b. 1848 Norway, who was a lawyer in Lead S.D. in 1876. He was one of the four men who discovered the Homestake mine on April 9, 1876. He filed another claim in 1882 in Lawrence County, but we don't know where he went afterwards, or where he died, if he ever married. We assume he was in Chicago prior to going to South Dakaota as his other family members are found there.
If you are a descendent of the lineage from the Slaeten Engh book, please contact us at my email address: firstname.lastname@example.org. Thanks. Michele