Boy Scouts Uniform and Insignia
The Boy Scouts publish the BSA Insignia Guide (item no. 33066) that describes the various scout uniforms and insignia. Most of the content of this is available on the web. In particular, this page shows the placement of most of the insignia on the sleeves and pockets.
The Uniform and insignia of the Boy Scouts of America page in Wikipedia has lots of information on the scout uniform and insignia.