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I read http://typophile.com/node/31206 with some interest, as I have found myself in a somewhat related predicament. I'm going to be doing layout and typesetting of a small periodical that aspires to be a scholarly journal (it isn't quite, but the people publishing it like to think that it is...) and am making new templates, because it was previously done in Quark and I use InDesign. I don't much care for the present look - 10/11 Stone Serif, 4p6 margin all around, headings in Stone Serif semibold - so I intend to alter the design some. Just to make the context clear, the content of this periodical tends to be historical, mostly but not entirely in the 1800 to 1950 time range.
The one fixed point is that the logo, which is on the cover and first interior page, uses Arnold Boecklin. This is such a floridly art nouveau face that it seems the obvious thing to do is go with that theme in the design. I can just about see something like Korinna, or maybe Magister Book, for display use, but then what would work as a text face? The obvious period faces that are suitable are mostly moderns like Century Expanded, which seem like the sort of thing art nouveau was reacting against. What did art nouveau designers use when they needed to set large amounts of text fairly unobtrusively? Perhaps one of the early old-style revivals like Cheltenham? (that one's probably not right for this use, though)
Or is art nouveau so contradictory to the aesthetic of scholarly journals that I might better forget it, pretend the logo isn't there, and design it around some other idea entirely?