Mangnall's Questions (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

Middlemarch

…Mrs. Vincy had never been at her ease with Mrs. Garth, and frequently spoke of her as a woman who had had to work for her bread—meaning that Mrs. Garth had been a teacher before her marriage; in which case an intimacy with Lindley Murray and Mangnall's Questions was something like a draper's discrimination of calico trademarks, or a courier's acquaintance with foreign countries: no woman who was better off needed that sort of thing.