Some materials are available on the Snohomish Umpire Google Drive folder.
Snohomish Little League Umpire Manual - A condensed version of basic umpire mechanics, including some tips on game management.
Other materials, videos, and resources are available on the Rules and Mechanics subpages.
Little League Bat rules: There have been questions about what bats are permitted to be used in Little League play. To help coaches, parents, and umpires, SLL has put together a quick guide to Little League bat requirements (both baseball and softball).
Umpire Discounts! Save 10% at Gerry Davis Sports by using coupon code "LLTEN"
Other options for umpire gear are Ump-Attire, Honig's, Amazon, Out West Officials, and Epic Sports.