It does matter whose yard they are in. The owner of the house or apartment is the rightful owner. Especially after someone has had 6 weeks prior to the eviction to take care of those issues. After eviction anything that is left in or on the property becomes the landlords or owners property.
The owner/landlord of the house or apartment stated that he had 1 hour to gather up his belongings, after that it is the owner/landlords property. Whatever is left when a person is evicted is the property of the person or persons who owns the property. That is the law. Conscience is another thing. However, Alpha has already stated numerous times that he will keep them UNTIL the man returns. He also stated that he will return the items back to him if he does. They will be in better shape remaining at his home until the man returns, then out on the yard being destroyed by the weather or vandals.
In all fairness, Alpha you should ask the owner/landlord for the permission to take them and get it in writing what had occurred, before you do sell or give away any of the owner/landlords stuff.