hi, saw your post and wanted to reply.... gustav was my husbands uncle I don't know a lot about him but do hAVE SOME THINGS. I ALSO HAVE A RECORD OF PAPAERS ON HIM WHEN HE CAME TO THE U.S. IF I CAN BE OF FUTHER HELP PLEASE CONTACT ME AND I WILL SEE WHAT I CAN DO .
THANK YOU PAT POPP
MY HUSBANDS MOM WAS FREIDA