If such corporation fails or neglects to pay such damages within ninety days after notice in writing that a loss or injury has occurred, accompanied by an affidavit thereof, served upon any officer or station or ticket agent employed by said corporation in the county where such loss or injury occurred, such owner shall be entitled to recover from the corporation double the amount of damages actually sustained by the owner.
Iowa Code § 327G.7
Referred to in §327D.190