. . . a "children's lit. guide to Boston." She'll be visiting from Australia next month and wants to know what children's-book places she should try and see. I don't get out much, but of course you can't miss the ducklings, and while you're there you can see the original address of the Horn Book at 270 Boylston Street. Some excellent contemporary bookshops for boys and girls include The Children's Book Shop in Brookline Village and the Curious George store in Harvard Square.
J.L. Bell at Boston 1775 could probably be called upon to point out some of the more historical connections; I'm personally grateful to the Freedom Trail for the time I got lost on the way to work and it led me right to the Horn Book's (former) door.
Moving a bit further afield, don't miss the Little Women stronghold in Concord, and I would urge a day trip to the Eric Carle Museum of Picture Book Art in Amherst--catch up with dear, demented Emily while you're there.