Herman Henry Hittenberger (*1855 Niederwoellstadt/Hessen
photo: his house in Oakland (about 1894) -
described in one of his letters
Herman Henry Hittenberger's father Georg
Hüttenberger (*1831 Gross-Umstadt,
+1900 Pfungstadt) in his job as a geometer and his half-brother Ludwig
Hüttenberger (*1871,+1945 Pfungstadt) working as a geometer,too, in
a photo of c.1895.