I don't know! I already have a lot of these service guides!
Mostly routes from Bedok & Tampines, places I frequent very
often. I also collect service guides whenever I'm far from home
(e.g. CCK, Bt Batok, Jurong East, etc ... )
I'll be glad to share some of the new (I have some old ones too,
but I'm not giving them up) guides I have; I have too many
anyway.