Simplify the following text for a Grade 7 native English-speaking person.
Original: Also , authorities had posted the handwriting from the brochure on billboards , which was historic as it was used for the first time in an attempt to find the unknown killer , and this led to a tip from a former neighbor who was able to provide a copy of a work order that Chandler had written .
Simplified: Also , authorities had posted the handwriting from the brochure on billboards , which was historic as it was used for the first time in an attempt to find an unknown killer . This led to a tip from a former neighbor who was able to provide a copy of a work order that Chandler had written .