More than likely not unless you go to a mill and have them custom milled. Expect to pay a tremendous amount of money for a few long length's if you even find someone to run them for you.

Contact a flooring company. They often have odd lots of flooring---and your species/size are common.

Otherwise, outside of Craigs list /etc., what millworkman advised.

For the right price,a cabinet shop or hardwood dealer can special order them for you. I don't want to say for certain based on a picture but I'm not convinced it is oak. At any rate,unless there is great historical or sentimential value attached,I would use ash. Any accomplished woodworker should be able to do the same since the floor has been stained already.

Those do look like oak. However, if you replace them, the two main issues are: 1) if they are tongue and groove boards, it is going to be a hassle to remove them without doing damage to adjacent boards; and 2) getting a finish to match. Are those boards really rotted, or just discolored from water exposure?

This post was edited by kudzu9 on Sat, Aug 16, 14 at 4:06