I've just discovered that three of the Firths in my tree,Edwin, Lavinia and Fenetta - siblings - emigrated from the Kippax area of Yorkshire between 1881 and 1888. Can't be more specific than that about the date, sorry. They ended up in redding, and seem to have had a dry goods/drapery business in Redding city centre.
Other names to conjour with, who were born in the US - Horace, Alice, Lois Lorraine.
I'm looking for anyone who might recognise one of these names to help me fill in some gaps. Thank you ;)