tilia americana ?

Yes....commonly called American Basswood.

That sounds right. This raises some questions. Most of my parent's trees were lost to disease, wind damage, and wind-propelled salt spray. This tree was one of the few survivors. It hasn't lost any limbs. However, it's leaves are filled with tiny holes, and the web says in theory American Basswood aren't very salt tolerant. Should I plant more, or not?