Jack inherited a house from his father, Zack, on the death of his father, in January 2019. A Federal estate tax return was filed and the value of the land as finally determined for Federal estate tax purposes was $300,000 (the property's fair market value at the date of the death). Zack had acquired the house in 1958 for $19,000 and prior to Zack's death had made permanent improvements of $50,000. How much is Jack's basis in the land?