From Hendricks County court records:
In September 1912, John J. and Ersa Lindsey filed a petition in Hendricks County Circuit Court to adopt Walter William Cutsinger. Walter was born on 25 September 1905. On 27 September 1911, the juvenile court of Lawrence County made him a ward of the Lawrence County Board of Guardians, and he was placed in the Lindseys' home on 4 October 1911.
The petition was granted and Walter's name was changed to Walter William Lindsey.