I must not have been browsing the Library as much as I used to, because I hadn't seen one of the classic reprints until reading this post.
Having looked over the results of a search on "classic reprints" (without the minus <g>), I see that all 600+ have been added to the library since the beginning of 2015. While the catalog / list of titles might be an interesting slice of culinary history, none of the 600+ listings have been added to any member's Bookshelf yet. My vote would be to do a blog post on the existence of the series with some information on and link to the "publisher" (I'm assuming these are on-demand titles), and ditch them from the Library. Any member who happens to get a particular book in the series can always ask for it to be added.