My husband's adoptive grandparents said they were leaving a piece of land to each grandchild. I have never been contacted about it . How do I know if

If your grandfather left land to you by will, you will be notified when the will probates.  If the will has not probated, you can go to the deeds office and see if he added your name or another to the deed.  If the land is still in your grandfather's name alone, it will have to probate to pass to another.  If he had no will you will not inherit at all.  Your father will.  You father could not sell of the land unless he owned it or had a power of attorney allowin ghim to do it in the case of your grandfather not being in his right mind or otherwise appointing your father to make a sale.   Good luck to you sir.