Finding the Armor Concept Arts/ Scetches

[Hyun Seok Choi]

Hello, im finding the concept arts/skecthes of halo armor

I bought the halo4 art book 'Awakening'

I found that there was only a bit of halo4 armor

Then I found some of armor concept art by 'robogabo' on internet

(soldier, war master, gungnir, infiltrator, locus, scanner, rouge, orbital and eva)

Does anyone know where other concept arts/sketches are?

 

PS: really want to find the recruit armor