There was a PDF of a Gans specimen book floating around the web for a while. You might find it in there.

By the way, like many foundries of the era, Gans made many "copies" of other popular typefaces, and Dalia may be their version of Middleton’s Delphian Open.

None of the Gans specimen books I have seen--in facsimile--has complete alphabet listings. Stephen's suggestion is probably as close as you'll get...

Hi, I had seen the Delphian and guessed that the Dalia was a copy of this.

I think the Dalia is based on the Ibarra serif.

I just managed to find the Gans pdf specimen. Very useful.