4x4 frame help needed

[xshadow]

I may be missing a cross member for my frame what does your frames have??...well i don't know if its really called a cross member.
on my frame from the rear this is what I have
1. near the rear of the truck
2nd one that is smaller i think it's for a spare tire. 3rd with a hump that looks like it's for the drive shaft if the truck sat really low right before the frame dips down. all with rivits

next would be for the trans/transfer case that bolts on.

should I have one were the back cabmounts are? I don't have one there. 1969 long bed