This location's first Easter Egg Roll was on April 22, 1878
[DOC] [TLE] Easter Egg Roll Significant Dates - White House Historical Association [PAR] April 22, 1878 - The first annual White House Easter Egg Roll was held after 
President Rutherford B. Hayes agreed to open the White House grounds on 
Easter... [DOC] [TLE] On April 22, 1878 she instituted the Easter Egg Roll on the White ... [PAR] Jul 7, 2016 ... On April 22, 1878 she instituted the Easter Egg Roll on the White House ...