The Molde family in America

Without access to sources I am again humbly asking the community for answers. Albert Joakim Molde born May 5 1882 in Kristiansund, Norway and died May 16 1939 in Brooklyn, NY. Assumed to be a bachelor but did he ever have a family? What did he do for a living? Alberts sister Petra Oline Molde born on May 3 1873 at same place as her brother and died December 5 1954 in Suffolk, NY. Except from her Norwegian son Bernhard did she have a family? Petra's son Bernhard Lumholtz Molde was born on July 18 1903 at same place as his mother and died on December 8 1993 in Fort Lauderdale, FL. Married to Helen E Molde 1904-1992. What did Bernhard do for a living and did they have children? Available information on Helen E Molde is also of interest.