I would have him x-rayed for elbow dysplasia and other potential disorders causing limping.
This may help cut costs if you pay monthly premiums generally averaging 30-40 dollars a month.
Do you have a college with a veterinary clinic close to you. They may examine your dog for a low cost. If not, try to get him to a vet; try another if you are not comfortable with the first one.
Three seems pretty young for this type of problem. Good luck.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.