Marion County Optometrists and Opticians
- 1914
- Knoxville: F. O. Belknap; R. E. Brobst (-Hutchinson Sch., 1907. - La Grange. * Dr. Earl J. Brown.); H. O. Smith; E. E. West
- Pella: Lewis De Vries
- Pleasantville: T. L. Cheetham
- Tracy: Lewis E. Park
- 1920
- Knoxville: Roy E. Brobst (Dr. Hutchinson, 1893; South Bend College of Optics, 1903; Dr. La Grange; Dr. Earl J. Brown; Iowa State Association fo Optometrists); Harry O. Smith; Edw. E. West
- Pella: Lewis De Vries
- Tracy: Lewis E. Park
- 1922
- Knoxville: Roy E. Brobst (Dr. Hutchinson, 1893; South Bend College of Optics, 1903; Dr. La Grange; Dr. Earl J. Brown; Iowa State Association fo Optometrists; American Optometric Association); Harry O. Smith; Edw. E. West
Transcribed by Al Hibbard on 2022-10-12. Original source is from The Blue Book of Optometrists and Opticians published by The Optometrist and Optician, 35 N. Dearborn St., Chicago, Illinois. This book can be viewed at Hathitrust (https://catalog.hathitrust.org/Record/010660960). Thanks to Cass county coordinator Cindy Maher for this idea.