Clearly I’m not yet done with helical designs! If you’ve already purchased Something New to Learn About Helical Knitting, this bonus design will be added to your Ravelry library later today, but this is also available as a single pattern download. Giuseppe Momo is the name of the architect who designed the newer 1932 double helix staircase at the Vatican Museum in Rome (below). This is one of the most spectacular double helix staircases, and so it seems a fitting name for a hat that features both helical garter stitch, and a cable panel that has a bit of a helical look to it!