The search on Alice turned out to be more difficult than I first thought. It took me a while to search efficiently for a book that had similarities in subject matter to the book Synopsis architecturae civilis eclecticae by Johann Jacob Schübler.
I first had to familiarise myself with the various search filters. For example, I did not immediately notice that the “Topic of Conservation” had to be adjusted.
Then I realised that it depends a lot on the keywords I enter in the search box. I first tried the term “antiquen geometria elementary”. The results were rather sparse and ranged from books about baroque architecture to an Art Basel catalogue.
With the search term “diagramma quadrangulare” I then found the book Tutte l’opere d’architettura et prospetiva by Sebastiano Serlio. I found the book quite appropriate because Sebastiano Serlio lived around the same time as Johann Jacob Schübler and the books are quite similar in content as well as in style. Both deal with geometry and the associated rules of ancient architecture. Both work with drawings they have made themselves to illustrate the subject matter. I also have the feeling that both books functioned as textbooks for students.
I found the second book that suited me with the search term “Civil-Bau-Kunst”. It is History of Architectural Theory by Hanno-Walter Kruft. Hanno Walter Kruft lived in the 20th century and was an art historian. In this book, he rolls up the whole history of western architecture from Vitruvius to then. The resulting encyclopedia is an important textbook for students and all other people who deal with architecture in a scientific context. It is thus a kind of continuation of what Schübler wrote in the 18th century.
So it was a successful search and approach to Alice after all. I came across exciting things and thanks to Xenotheka I was able to gain direct insight into the different books.