331 N Main St, Los Angeles which is a restaurant named "Boston Bakery and Restaurant".
Source: 1904 Los Angeles City Directory p970 & 2013
Notes for this connection: The restaurant section only lists John Novakovich 331 N Main but not the name of the restaurant. Listed as partner with: 'Mastinich M & Co (Mitchell Mastinich, John Novakovich, George Cuclitza), rest 316 N Main' which doesn't show with Novakovich listing
Notes for the address: Restaurant section has 'John Novakovich, 331 N Main St ' so it's a restaurant and not (just?) a bakery.
Updated 29 Nov 2019, 15:15 PST