I got a chance to look at a very nice 99 year old oak desk last week. The owner in SE Portland is interested in getting it to a new home soon. It is structurally in great shape. The maker's date on the bottom of one of the drawers indicates it turns 100 next March.
The photo doesn't do it justice. If you are interested, I will pass your info on to the owner.
Desk top 60 " X 34"
Mike
503-929-4990