The red tractor in the upper right hand corner is a Massey Harris tractor but not a 333. I have the pattern book and stitched the one in the lower left hand corner for my husband who is crazy about tractors. I asked him to look at my pattern book and he's the one who said there was no 333 there.

Thank you so much for your quick reply. I sure would like to find a pattern for a 333! But maybe this will have to do.
Thanks again.

There are lots of tractor patterns. Just type in "counted cross-stitch tractor patterns" and you should get many leads. I wouldn't know a 333 if I saw one so I looked them up and my husband sat by me and looked for what he wanted (antique tractors). Good luck!