In some circles, German physicist Gustav Zeuner, author of the two-volume Technical Thermodynamics, which went through five-editions, is considered as the founder of the "Dresden school of thermodynamics". Specifically, in 1873, Zeuner took on the post of director at the Royal Saxon Polytechnicum in Dresden (now Technische Universität Dresden) in east Germany, wherein, aside from thermodynamics, he led to the introduction of the humanities; the extension of the range of subjects taught resulted in the polytechnic's rise to a full-scale polytechnic university in 1890. In 1889, aged 61, Zeuner gave up his position as director of the polytechnic to work as a lecturer until his retirement in 1897.
Zeuner was succeeded at Dresden, in 1897, by German physicist Richard Mollier as professor of mechanical engineering. Mollier later became notable for his enthalpy-entropy diagrams for steam; publishing treatises such as The Entropy of Heat (1895) and New Graphs for Technical Thermodynamics (1904). At the 1923 Los Angeles Thermodynamics Conference, it was decided that any thermodynamic diagram having enthalpy as one of its coordinates should thereafter be called a "Mollier Diagram". 
German mathematical physicist Georg Helm studied mathematics at Dresden Polytechnic during the years 1867 and 1872. In 1881, he completed his PhD at the University of Leipzig and that same year married Elise Zeuner, the daughter of Gustav Zeuner. Helm then taught analytical geometry, mechanics, mathematics, and physics at the Dresden University of Technology and at the Royal Saxon Polytechnic from 1888 until 1922. He later becoming head of the office of rector at the Technical University of Dresden in 1910. 
1. Mollier Charts – ChemicaLogic.com.
2. Georg Helm - Technical University at Dresden.