435 N Geneva St Ithaca

This building first appears in the 1888-1889 city directory as 93 N Geneva St.  Prior to 1899 this building was 93 N Geneva St. 
In 1899 and 1901 cds there is a 437 and 439 N Geneva St but no 435, same for 1909 and 1911.  
In the 1913 cd there is a 435, 437, and 439 with William H VanDuzer listed at both 437 and 439.
In the 1915 cd there is a 435 and 437 with William H VanDuzer at 437.
Leaving us to conclude that prior to 1913, 435 N Geneva St  was numbered 437 N Geneva St. 
See also 1899 Crandall city engineering map.

1910 Sanborn: shingle roof 1 story section on back small 1 story sections