In addition to Lodge 27, these four organizations utilize The Historic Masonic Temple and are branches of Freemasonry.  To be member of any of these organizations, SOOB excluded, you must first become a member Lodge 27 as they build upon the knowledge given through the first steps in Masonry.

Oshkosh Assembly No. 267, Social Order of the Beauceant

Oshkosh Commandery No. 11, Knights Templar

Oshkosh Council No. 8, Royal & Select Masters

Tyrian Chapter No. 15, ​Royal Arch Masons