Maginnis, Walsh and Sullivan, an American architecture firm active from its founding in 1898 to its dissolution in 1905.
The principals were Charles Donagh Maginnis (1867-1955), Timothy Francis Walsh (1868-1934), and Matthew Sullivan (1868-1948).
Sullivan left the firm in 1905 for solo practice; the other two continued as Maginnis & Walsh for decades.
[1] Work at: