Have you checked the '37 parts manual? I think they may show a drawing of the components, giving all the Trico numbers.
The last time I looked, Ficken was selling brand new blades. You just need to tell him the year and body type (the convertibles, it turns out, use a shorter blade than the sedans and coupes).

Thanks Jon. Unfortunately, the 37 parts manual doesn't list the Trico numbers, nor does any other source I can find. I will contact Ficken, however.
Thanks for the tip!
John

The Trico wiper parts are listed on page 74 of the parts manual which is available for download at this site, for fully-registered individuals.

The arms are #76570-81C for closed cars, and 76570-31C for convertibles (shorter, due to reduced height of windshield). The wiper blades are available from Ficken, mention year of car, open or closed body style (and for good measure, give length of blade if known)

Thanks a bunch, I ordered a set from Ficken and they are on the way!
John