The Simensen Siblings to New York

I am looking for 4 (at leat) siblings who is listed as emigrated on the "Digitalarkivet" - protocol: First, Aksel Halvard Simensen emigrated. He emigrated on April 16 1910 from Christiania., He was born on September 21st 1892 in Tune by parents Zacarine Helga Rasmusdatter (Melby) and Karl Edvard Simensen. Here is his http://www.digitalarkivet.no/cgi-win/webcens.exe?slag=visbase&filnamn=emikra1&gardpostnr=195151&merk=195151#ovre He arrived in New York on may 1st with the ship Carmania from Liverpool. In his manifest. he is said to go to his "uncle Theodor "Teddy" Jørgensen. "Uncle Theodor Jørgensen?? Brooklyn N.Y 6?? - 2ave" Second was his younger brother, John Melby Simensen. He was bornon feb. 2nd 1903/4 by the same parents. He was born in Sarpsborg. http://www.digitalarkivet.no/cgi-win/webcens.exe?slag=visbase&filnamn=emikra1&gardpostnr=256593&merk=256593#ovre He arrives in New York on april 29th 1924, onboard the ship "Stavangerfjord". He is also said to go to the same "uncle Theodor: "Uncle Teddy Jorgensen, 136W. 73rd st. , New-York, N.Y." Third was the sister Elna Zakarine Simensen. She is a servant. She is born on feb. 18th 1903/4 in Sarpsborg by the same parents. She emigrates in 1927, and heading for New York on the "Stavangerfjord" http://www.digitalarkivet.no/cgi-win/webcens.exe?slag=visbase&filnamn=emikra1&gardpostnr=266223&merk=266223#ovre Last I have found emigrated is their sister Rakel Gulethe Simensen. She is listed as a "home-ec teacher". She emigrates on october 7th, 1930 with the ship "Bergensfjord" http://www.digitalarkivet.no/cgi-win/webcens.exe?slag=visbase&filnamn=emikra1&gardpostnr=273836&merk=273836#ovre As the records for Ellis Island stops in 1924 I have not yet found the two sisters. The siblings had at least to more sister, Esther Helene Simensen, born on November 20th 1894 in Tune, living with parents in Sarpsborg in 1900 census. and Marta Simensen born 1896 in Sarpsborg/Tune, living with parents in Sarpsborg in 1900 census. There may be more brothers and sisters. My questions: 1. Is it possible to find the immigration-notice for the two sisters? 2. Is it possible to find any census-records for the siblings? As Aksel Halvard arrives in 1910, He might be found in 1910, 1920 and 1930. As for the three others, the 1930 census might be the only one they can be found. But my guess is, if "uncle Teddy still is alive" they might have stayed with him for some time. I do not know at this time, in what meaning they are related to him, and what they mean by "uncle". As for Aksel, I guess he is with his uncle in the 1910-census. Maybe he stayed there over time? 3. Any leads on decendants will be very appriciated. Berta