Inspired by this question: Is the theory that dwarf women look like dwarf men limited to the works of Tolkien?
The answer to the above question is no as there are other works which continue the trend of dwarven men and women being indistinguishable from one another. However, the examples provided in the answers to that question are all relatively recent.
As the title states, I'm wondering if there are any works which pre-date Tolkien that also describe or depict them as being nearly identical in appearance. Note that I'm not looking for a list of works, I'm simply after a "yes" or "no" answer - though in the case of a "yes" answer I'd also be looking for a single example as proof.
For the sake of this question we'll consider pre-dating Tolkien to be any work produced prior to 1937, which is when (according to Wikipedia) The Hobbit was published and he began writing The Lord of the Rings.