I got the walks wrong in my guess. It was 8 instead of 11 (in his 2nd no-no).
"“Double No-Hit,” as Vander Meer would soon be nicknamed, began his remarkable stretch on June 11 at Crosley Field in Cincinnati, walking three while striking out four and allowing no hits and no runner past first base in a 3-0 win against the Boston Bees. Four days later, on June 15, Vander Meer walked eight and struck out seven while holding the Dodgers hitless in a 6-0 triumph in the first night game at Brooklyn’s Ebbets Field." Jim Palmer had six BB in his only no-hitter.