Can anyone tell me about the Durfield Subdivision mentioned in a newspaper clipping from 1918? I found that 33 Lothrop Ave, became 71 Lothrop Ave in 1921 renumbering. Any other info would be appreciated.

"Chas. H. Ritter & frau and Charles S. Kennedy und frau, Leil von lots 30 & 31 der Lothrop and Durfield Subdivision, Bertelfeftion 55 fiir $1