We have a few photographs of the El Nathan Children's Home, though we don't have much documentation about it. I believe it was originally attached to the hospital. When the hospital burned down in the 1940s, the Children's Home and the hospital were rebuilt as two separate buildings.
Valdez in the 1950s and 60s also had the Assembly of God Children's Home, affiliated with the Assembly of God Church; I don't know if there is any connection to, or overlap with, the El Nathan home. I've never heard of the Hughes Children's Home, but I think there was a Hughes family in Valdez in the 50s.
I hope this helps -- feel free to email me at email@example.com
for further discussion.
Curator, Valdez Museum & Historical Archive