Name these birds...

[R.F.Bennett]

Dave_T took a series of photos of the 1/72 Balsa collection at the USAF Museum. Each one has a number under it and Dave has a photo of the list relating each number to the aircraft. When you post your answer please use that number, or "The one Below 21" or the one with the number #### on the fuse" You must back up your claim by either a photo or drawing posted here. Or a link to information about the aircraft you are identifying. Lou and Dave are in charge and I won't be guessing (like I know anyway)   
Thanks Dave and Lou.

You can click on the image to see a larger version.
When these are all ID'ed I'll post another. GET TA WORK!       

First pic;

[R.F.Bennett]

C'mon guys! 
Should we give up? 
Meybee we should 
Just not smart enough?! 
How about a lurker. . . No 
This is the last chance for this one.... 
Less work for us   
Should we save it ?
Lotta work, no reward hmmm?
Sorry Dave and Lou. . .
ONE more week 

[dave_t]

Back in the days when all the manufacturers were promoting their slow-fliers as "observation" aircraft. Here is the key...

http://smm.solidmodelmemories.net/Gallery/displayimage.php?album=lastup&cat=0&pos=0