By Steve Olafson TULSA, Oklahoma (Reuters) - There was no doubt in Nora Guthrie's mind where the final repository of her famous musician father's legacy would be. The Woody Guthrie Center opened on Saturday in Tulsa, allowing visitors to see the folk singer's handwritten lyrics to "This Land Is Your Land" and thousands of other lyric sheets, letters, postcards, artwork, photos, manuscripts and journals. Guthrie was born in Okemah, Oklahoma, about 60 miles from Tulsa, in 1912 and spent his early years there. ...