Check out Corset Cutting and Making. https://www.amazon.com/dp/B079HT513P/ref=cm_sw_r_cp_apa_jYXQFbQ7ACCKW?_encoding=UTF8&psc=1
My only complaint is that I would have preferred the modeled photos to be more historical. The makeup and hair is really modern. I also would have liked it if the larger sizes of corsets were modeled on larger women.
I believe you can buy the patterns in PDF on Etsy.
I think what you're bumping up here is that corsets are solidly industrialized by this point in time, so drafting would be done at a factory by a few people who personally trained their staff. You're basically looking for trade secrets held by people who have been dead for a century.
The closest book I can think of is Corset Cutting and Making by Marion McNealy, but that's for like 1900-1920, and it's based on a book that's a target incomplete rarity. https://www.amazon.com/dp/B079HT513P/ref=cm_sw_r_apan_glt_0GBT9622C42J8VWZSTRP
Your most historically accurate choice would be to buy a corset from someone else in a stock size! Otherwise, I agree with the suggestion to look at Symington's, resize the pattern to fit you, and then inform the construction from reference books and extant corsets.
Atelier Sylphe on Etsy also has many patterns available pulled from corsets in her collection. The level of detail she gives is incredible, and I highly recommend buying from her for the info. It looks like she's currently on vacation, but check out her shop when she comes back. https://etsy.me/3AghKwy
There's also Vestina bodice. According to the book Corset Cutting and Making, these bodices were corded instead of having bonings and they were buttoned up in the front. They were really worn for providing warmth and anchoring for stockings. The book has a few patterns for girls' corsets but it didn't provide too much information.