Hi, You have an amazing amount of information.
Is this from the Adoption Record?
Alice Josephine KOESTER has probably married.
It is possible that if so, her husband and any children are unaware of the births.
She was just 18 & 21 when she gave birth to the children.
In those days - many girls gave up their babies -the babies fathers may not have been willing to raise the children. or there may have been other circumstances.
Unmarried -Pregnancy /birth was at most times secret. sometimes - even family members not being aware of same.
Womens situations were much different - than today. Things started to change in the late 1960's -
Have you posted a message to any of the boards for SASKATCHEWAN?
Surnames in Capital Letters on the Subject Line.
Have you searched the Online White Pages Directory MyTelus.comhttp://www.mytelus.com
for Conrad JENSEN -perhaps he is still? listed. There are only 5 Listings for the JENSEN surname in Moose Jaw Sask. Conrad could have re located to another area.
Have you registered - with any of the Parent/Sibling finder agencies.
Govt of Alberta has a registry.http://child.alberta.ca/home/602.cfmhttp://www.canadianadopteesregistry.org/
Searching the Alberta GenWeb Local History Books finds KOESTER surname
Where We Crossed the Creek and Settled; Wheatlandhttp://www.rootsweb.ancestry.com/~canab/lookwhea.html