When preparing the previous entry, about the stele by Husby Gård, I realized I hadn't published any photos of the nearby rune stone except for a close-up. Here it is: The Husby Rune Stone (Husbystenen), listed as U74 in Upplands Runinskrifter[a] (Rune Writings of Uppland), and as RAÄ Spånga 80:1 in the Swedish National Heritage Board's big database[b].
The top part of the stone was lost sometime between 1902 when it was last recorded and 1933, when a search for that portion of the stone turned up empty. The text reads:
"Björn erected this stone after his brother (...) -sten. God and the mother of God help his spirit. Visäte carved."