| Owner | Count | 1.
| Lockwood, Ward, estate of, | 97 | 2.
| Locomotive Park, Kingman, Arizona | 2 | 3.
| Locust Grove Historical House, | 2 | 4.
| Locust Grove, the Samuel Morse Historic Site, Poughkeepsie, New York | 1 | 5.
| Locust Hill Cemetery, Evansville, Indiana | 1 | 6.
| Locust Lawn Mansion, New Paltz, New York | 1 | 7.
| Locust Street Garage, Harrisburg, Pennsylvania | 1 | 8.
| Loder, Edi F., Mrs, Boise, Idaho | 1 | 9.
| Lodes, Joe, Custer, South Dakota | 1 | 10.
| Lodge, H. Boone, Mrs., | 2 |
|