Check out these devotional journals written especially for people on short-term mission trips:

*** 30 day Helping Hands–Healing Hearts (3 part combo book) especially for medical personnel

*** 28 day Live in The Light (3 part combo book)

*** 14 day Live in The Light (On-Field only)

*** 7 day Pre-Field Preparation (Book 2) follow up to book 1

*** 14 day Returning Home (Book 3) Reentry devotion, follow up to Reentry books 1 & 2

These (and others) are all available from:

 

http://www.DeeperRoots.com

 

Also, check out the Short-term Missions trip Training course from

 

http://www.missiontriptraining.com/index.html

 

They also have regular emails for leaders of short-term missions trips.