Albert died Nov. 13, 1952, Wilhelmine, Oct.13, 1957. Don't know where buried but would assume Denver Colorado as Albert had another business called Denver Stove House, Inc. with son Elwyn. Elwyn married Louisa Alkinson Ward, b. Denver, June 20, 1901 who was daughter of Ethelbert and Ada Smith Ward. She wrote 5 books, such as Denver In Slices (Sage Press, Denver, 1959). They were last known to reside in Denver.
Believe Denver Stove House business open till 1958.
E-mail address of Ellen Catharina Arps is several years old but here it is -- email@example.com
I have lots more info to much to type here. Info on Gustav, Gordon, John L., Lewis and Otto. My e-mail is firstname.lastname@example.org
Thank you for the info on John Arps Sr. Will look into info on the Castle Garden database.