four o'clock
Who would not ? For reply the old man held his treasure toward her . `` Heaven bless you , '' was all that he said . It was four o'clock when Bobs descended from a taxicab and mounted the steps of a handsome brown stone mansion on Riverside Drive . Mr. Van Loon was at home and , being a most kindly old gentleman and accustomed to receiving all manner of persons , he welcomed Roberta into his wonderful library , listened courteously at first , but with growing interest , when he realized that this radiant girl had a book to sell which she believed to be both rare and valuable . The eyes of the cultured gentleman plainly revealed his great joy when he actually saw the long-sought first volume . `` My dear young lady , '' he said , `` you can not know what it means to me to be able to obtain that book .