OK, well one burner should reach welding temp, if the ends are not wide open. I see your link was removed because the forum rules do not allow links to commercial sites. It's allowed to put the name of the site in so folks can go to the site if they want to. I think the other suggestions will solve the problem.
Look for old farm (horse drawn) implements, wagon parts, sections of round rod, square stock, bands from barrels etc. The clue is a texture like surface and the proof is in the break test.
If you do a search using your favorite search engine and add iforgeiron to the search string, you will see other threads about your anvil. I used Google and came up with at least 5 threads on them. Also knowing your general location may help with answers. The presence of a pritchel hole indicates it was made sometime after 1830-40 or so.
One thing you haven't mentioned is the cubic inch volume of your forge. A single burner will almost never reach welding temps in say a 700 cu in forge. Some pictures of the forge & burner will help with suggestions.
Forge each excuse into an opportunity. Enjoy each heat, each hammer blow, and each hour at the anvil as a gift. Count each success with a smile, knowing you have learned something from the project.
Forge 2021 into what YOU want it to be. ~ Glenn
I can't open the download file. I would recommend the The Pattern-Welded Blade: Artistry in Iron by Jim Hrisoulas a member here (JPH). Another book worth having is by Steve Sells (member here) although I have not had a chance to read it, if it's as good as his first book it belongs on the book shelf. Knifemaking 2.0 Advanced Studies.
Welcome from the Ozark mountains. From what you and George N.M. posted you should be good to go. The only thing I can add, is to find a local club and try to attend some meetings once the pandemic has eased.