I just read an interesting article about the type foundry Hoefler & Frere-Jones. I love reading about people who spend their day deciding that the flourish of the M is too big and just which 13th century material would be the best reference (really! I'm not kidding!). The article talks about a project that the firm did for the Nature Conservancy. Hoefler & Frere-Jones ended up creating a font for them called Oakleaf, which is modified version of their font Requiem.
I tried to find a piece from the Nature Conservancy where they actually used this font, but to no avail. With all those amazing swashes, I'm sure the piece was beautiful!