Bobby, ""almost six,"" tells how he and next-door friend Brenda, seven, discover a little tree growing inside an abandoned house and decide to do something special with it--despite knowing that the house is forbidden territory. Hall, ""a Grammy winner and member of the Songwriters' Hall of Fame,"" writes with practiced skill and considerable insight into the minds and talk of small children --children who say ""ma'am"" as a matter of course and think of Jesus as a close friend. His plot is slight; after careful cooperative planning, the two decorate the tree ""for Jesus,"" feeling that the ""Santa Claus tree"" isn't quite His; when the parents find out, they are firm about obeying rules and the dangers of the old house, but also discernibly pleased with the kids' thoughtful gesture--no punishments this time. Meticulous full-color illustrations contribute to the attractive format. A pleasant story about young children devising their own sincere, noncommercial Christmas observance.