Super neat looking White you have there! I see these from time to time floating around but yours is definitely in great condition.
I just picked up a White Family Rotary in a cabinet...next to Singer they are my favorite machines to look for because they are so pretty! I know Treadle On has a little info about Whites and definitely check out ISMACS.net if you haven't already!
Edited to Add - just out of curiosity I hopped over to ISMACS to see...they don't have a comprehensive list of machines and pictures of White's like the Singer's but if you go to the history of the company it says right there that the Model 8's are clones of the Singer 27...introduced in the late 1920's. It says it was initially manufactured by Domestic...I just happened to see one of those Domestic's at an antique shop the other day too!