Per the title, what are some of the oldest complex analysis books out there with (unsolved) exercises? Maybe there are some hidden gems from before the 20th century out there. I am aware of the classic books of Goursat and Titchmarsh.



Reference request: Oldest complex analysis books with (unsolved) exercises?
It seems the first textbook on complex analysis was J.C. Bouquet and C.A. Briot, 1859, [Théorie des fonctions doublement periodiques et, en particulier, des fonctions elliptiques](https://gallica.bnf.fr/ark:/12148/bpt6k99569b.image)


![](https://ilorentz.org/beenakker/MO/complextextbooks.png)


source: [The Real and the Complex: A History of Analysis in the 19th Century](https://books.google.nl/books?id=zpDDCgAAQBAJ&pg=PA119&) 


This 1859 text contains "examples", but no *unsolved* exercises. An early 20th century textbook with unsolved exercises is [Theory of functions of a complex variable](http://resolver.library.cornell.edu/math/1945316) by H.F. Burkhardt. The book is from 1897, the exercises were added in 1913 by S.E. Rasor.


