CREATE TABLE table_20206 ("Ecosystem" TEXT, "Date of issue" TEXT, "Place of issue" TEXT, "No. stamps in sheet" FLOAT, "Face Value" TEXT, "Printer" TEXT)

Who was the printer of Estes Park, Colorado?
SELECT "Printer" FROM table_20206 WHERE "Place of issue" = 'Estes Park, Colorado'
SELECT "Printer" FROM "table_20206" WHERE "Place of issue" = 'Estes Park, Colorado'