Creator
- Holabird & Roche (Chicago, Ill.)1
- Holmes & Winslow1
- Horch, Louis L1
- Howells and Stokes1
- Howells, John Mead, 1868-19591
- Indianapolis Terra Cotta Co1
- Jallade, Louis E. (Louis Eugene), 1876-19571
- Jardine, Hill & Murdock1
- Kahn & Wilby1
- Kahn, Albert, 1869-19421
- Kansas City Terra Cotta Co1
- Keister, George1
- Kreymborg Architectural Co1
- Lamb, Thos. W. (Thomas White), 1871-19421
- Leeds Fireclay Co1
- Lehman, William E.1
- Levitan, Benjamin W., 1878-19411
- Litchfield, Electus D. (Electus Darwin), 1872-19521
- Lowell, Guy, 1870-19271
- Ludlow & Peabody1