Posting for my son:
To the family who lost their boomerang in a tree today (August 1st): 
we met in the park, and i had my own boomerang. well, i kept looking after you left and i found your boomerang. we can arrange to meet-up. Send an email to me at theodorenelson@gmail.com describing the boomerang  just to confirm it is you. i'm sure i'll remember you, but i just want to make sure i've got the right people.

i hope you see this, and that I can get it back to you quickly.