Researchers will find additional information on these telephone companies in the state government records found in the State Archives. Secretary of State records include a series titled “Papers of Defunct Telegraph and Telephone Companies, 1851- ” (Series 360) which includes articles of incorporation, annual reports, and dissolution records. The index numbers to access these files are as follows:
| Freistadt and Cedarburg Telephone Company |
TEL 167 |
| Grafton Telephone Company |
TEL 272 |
| Mequon Telephone Company |
TEL 209 |
| Ozaukee-Washington Telephone Company |
TEL 594 |
