Hi,
Thanks for the post. I wasn't aware of this. So they got bought by Trimble some years ago, but TF's agreement with them remained intact. Is it possible they are only shutting down the paper map printing side of myTopo but keeping the tiles? I think the Trimble phone apps still use them, so unless they have an alternate source, that would seem odd.
Any additional info on this, or that you could learn, would be appreciated.
Unfortunately the USGS servers don't seem to want to serve actual topos, though they certainly could. I have one alternate topo server up my sleeve that I think TF can use, so there is still hope. There's also a non-free option that I may be able to explore.
In short, I'll do everything I can do to make sure TF users still have a viable topo map source.