CREATE TABLE table_57998 ("Rank" TEXT, "Name" TEXT, "Height ft / m" TEXT, "Floors" FLOAT, "Year" FLOAT)

What is the oldest year listed with the 1500 Louisiana Street name?
SELECT MIN("Year") FROM table_57998 WHERE "Name" = '1500 louisiana street'
SELECT MIN("Year") FROM "table_57998" WHERE "Name" = '1500 louisiana street'