Our work exploring the structural response of (Sr1-xLax)3Ir2O7 to electron doping was published in Physical Review B.  This paper resolves a structural symmetry lowering from C2/c to P21/c below a critical temperature that grows with increased La substitution.  This distortion creates two unique iridium sites within the IrO6 bilayers of this material and is a secondary structural response to the onset of the proposed charge order in this system.