Misc: to what was colonel potter, of 'mash' fame, allergic?

Questions

In 1899 Fred ---------- Omaha Neb, tap dancer/actor (Easter Parade, Swingtime), born.?

In 1902 David O ---------- Pittsburgh Pa, producer (Gone With the Wind), born.?

In 1908 1st ---------- held (Phila).?

In 1910 Comet ---------- 's closest approach to Earth.?

In 1910 William ---------- discoverer of stellar nature of Andromeda, dies.?