The architect had written a receipt for the papers, and Bobby now hurried Betty off, explaining as they went that they must take a car to Octagon House.
Octagon House proved to be the headquarters for the American Institute of Architects, and Bobby's errand had to do with one of the offices. Betty admired the fine woodwork and the handsome design of the house while waiting for her companion, and in less than fifteen minutes they were back on the street car bound for "the tallest office building in Washington," as Bobby described it.
"Dad wants an architectural magazine that's out of print, and he thinks I can get it there," she said. "Afterward, if we have time we'll go to the top of the building. The roof is arranged so that you can step out, and they say the view is really splendid. Not so extensive as from the Monument, of course, but not so reduced, either. I've always wanted to get up on the roof and see what I could see."
Finding the office her father had specified did not prove as easy a task as Bobby had anticipated, and she said frankly that if she had been alone she would have given up and taken another day for the search.
"But if you can keep a promise down to the last dot of the last letter, far be it from me to fall
