That’s Wolf River! It’s fluffy!
“Enormous fruits, often one pound or more. Pale yellow skin almost covered with pale dull red. Soft, tender, slightly mealy, creamy white flesh. Subacid flavor. Long-lived, very hardy, productive tree. Strong, spreading, sturdy limb growth. Hardy to -50°F. Open-pollinated seedling of Alexander found growing on the banks of the Wolf River near Fremont, Wisconsin, in 1875.”
- Seed Savers Exchange, Inc. Fruit, Berry and Nut Inventory. Ed. Kent Whealy. 3rd ed. Decorah, IA: Seed Savers Exchange, 2001.
Unfortunately for me my tree declined and died. I’m not sure why. County Extension looked at pix and thought it may have been a victim of polar vortex — a disease common to orchards in Wisconsin.