The term "Depression" or "Thrift" is a loose, non-Parker, term for a diverse bunch of Parker series from around the early thirties. This cluster was shown in a 1933 Parkergrams. Yes, four colors. Two sizes. The small size offered clip or ring, so 12 variant pens all told
With the ascension of my facebook group and with serious backchannel issues here (spambot applications), this site drifted. We might be doing an attempted Phoenixing of it this Summer. In meantime, do join the monster group at Facebook. http://www.facebook.com/groups/fpnuts