The NARGS indices are in the Fall editions, but there is an index compilation of the pre-2015 publications available online and free to non members, as well as the quarterly publications themselves that are older than three years. Unfortunately, the indexing of cultivar names is spotty, and may or may not show up.
I did find mention in Cole Burrell's article on cristata (Vol.64,No.2,119-121). He mentions Abbey's Violet as
My favorite is 'Abbey's Violet', one of the darkest selections, with deep blue-violet flowers.
https://nargs.org/sites/defaul...
I was working from the bottom (most recent) in the list here, and stopped when I found same, so you if you want to see if there is more....
From the index:
Iris cristata /
1.4, 2.97, 5.33, 6.38, 8.10, 10.27, 11.2, 11.50, 13.42, 14.40, 17.3, 17.61,
18.113, 19.99, 20.37, 20.45, 20.78, 21.99, 22.127, 24.126, 26.80, 27.2, 28.124, 29.66,
33.193, 35.79, 36.32, 36.114, 37.173, 38.73, 40.168*, 40.170, 46.134, 49.211, 51.110,
52.11, 52.274, 54.194, 54.242, 56.251, 56.253, 59.4, 64.109*, 64.110*, 64.119, 69.156
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As an aside, the drupal system continues to present problem. For the second time I have renewed membership on line, and it skips the ensuing year and adds a membership to the next year, leaving me with a year inbetween when I am not a member. Panayoti promptly fixes it for me, but finds no explanation. And now I find that I don't have access to the most recent RGQs, even though I am logged in as a member. Ugh!