623 Dryden Rd Ithaca (as of 1905) 423 Dryden Rd Ithaca (as of 1899)

This address 423 Dryden Rd on the 1900 Census and the 1901 cd but it became 623 Dryden Rd in later cds through the 1907-08 cd. It is not in the 1909 cd, and was possibly renumbered 609 Dryden Rd by then.