[ Teens/Mature Teens ] Very detailed instructions on the construction of model bridges. Also has charts showing the properties of Balsa wood.

[ Kids/Teens/Mature Teens ] Description of a model bridge building contest. Also has tips on how to start your own contest.

[ Teens/Mature Teens ] Presents information about tree growth, characteristics of the wood, and tools for modelers.

[ Kids/Teens/Mature Teens ] Tips and advice about designing and building model bridges from basswood and balsa.

[ Teens ] Records, rules and tips for this twenty year old contest along with hundreds of photographs of bridges.