| Richardson, Otis; 1909 Red Book; 1909 | 1909 Red Book | 1909-00-00 | HOLLAND | Chief Engineer |
| Richardson, Otis; 1910 Red Book; 1910 | 1910 Red Book | 1910-00-00 | HOLLAND | Chief Engineer |
| Richardson, Otis; 1911 Red Book; 1911 | 1911 Red Book | 1911-00-00 | HOLLAND | Chief Engineer |
| Richardson, Otis; 1912 Red Book; 1912 | 1912 Red Book | 1912-00-00 | CITY OF GRAND RAPIDS | Chief Engineer |
| Richardson, Otis; 1913 Red Book; 1913 | 1913 Red Book | 1913-00-00 | CITY OF GRAND RAPIDS | Chief Engineer |
| Richardson, Otis; 1915 Red Book; 1915 | 1915 Red Book | 1915-00-00 | CITY OF GRAND RAPIDS | Chief Engineer |
| Richardson, Otis; 1917 Red Book; 1917 | 1917 Red Book | 1917-00-00 | CITY OF GRAND RAPIDS | Chief Engineer |
| Richardson, Otis; 1918 Red Book; 1918 | 1918 Red Book | 1918-00-00 | CITY OF GRAND RAPIDS | Chief Engineer |
| Richardson, Otis; 1922 Red Book; 1922 | 1922 Red Book | 1922-00-00 | CITY OF BENTON HARBOR | Chief Engineer |
| Richardson, Otis; 1923 Red Book; 1923 | 1923 Red Book | 1923-00-00 | | Superintendent Engineer |
| Richardson, Otis; 1924 Red Book; 1924 | 1924 Red Book | 1924-00-00 | | Fleet Engineer |
| Richardson, Otis; 1925 Red Book; 1925 | 1925 Red Book | 1925-00-00 | CITY OF BENTON HARBOR | Chief Engineer |
| Richardson, Otis; 1926 Red Book | 1926 Red Book | | CITY OF BENTON HARBOR | Chief Engineer |
| Richardson, Otis; 1927 Red Book; 1927 | 1927 Red Book | 1927-00-00 | CITY OF BENTON HARBOR | Chief Engineer |
| Richardson, Otis; 1929 Red Book; 1929 | 1929 Red Book | 1929-00-00 | CITY OF BENTON HARBOR | Chief Engineer |
| Richardson, Otis; 1930 Red Book; 1930 | 1930 Red Book | 1930-00-00 | CITY OF BENTON HARBOR | Chief Engineer |
| Richardson, Otis; 1931 Red Book; 1931 | 1931 Red Book | 1931-00-00 | CITY OF BENTON HARBOR | Chief Engineer |