La Farge is best known for his production of stained glass, mainly for churches on the American east coast, beginning with a large commission for Henry Hobson Richardson's Trinity Church in Boston in 1878, and continuing for thirty years. La Farge designed stained glass as an artist, as a specialist in color, and as a technical innovator, holding a patent granted in 1880 for superimposing panes of glass. That patent would be key in his dispute with contemporary and rival Louis Comfort Tiffany.