There exists one Christiansen Workbench Co trade catalog: at the Smithsonian Library. Which is a bit far from me. I've emailed the reference desk to find out if a copy can be made and emailed or mailed to me.
If you have a copy of a Christiansen Co trade catalog, please get in touch. If you know of someone who owns a copy, please get in touch.
In the meantime, here are a few more Christiansen items I've gathered from who knows where: