Here is McCall's Pattern # 6097 Misses Costume Gown Renaissance Victorian Dress Size 14 16 18 20
Lined top that has a low, square neckline, peplum, back band with laced cord or ribbon closing; skirt is gathered with detachable train, bustle and lace back closing.
The pattern and instructions are still factory folded. The envelope shows some wear and creases from storage.