Hi, Julie. Although I am researching a different LaCroix family and we do not seem to be related, I notice your post regarding the brother of Albert LaCroix listed in his obituary --G.B. LaCroix.
After doing some searching found a George B. LaCroix and his wife Winnie living in South Dakota, Spink County, Mellette Township in the 1900, 1910, and 1920 census. If you do not have this information and you believe this might be the G.B. LaCroix and would like it, please advise and I can e-mail you the info.
Best Regards, Denise
Researching Frederick Louis LaCroix, a french Canadian born in Missouri, lived in MN 1845-1874.