I met John through his son Zach, who has a YouTube playlist that tells his story as a donor conceived person. John is interviewed in the first video: https://www.youtube.com/playlist?list=PLtlrTLzLcouBaCM7PpBfgxZCvRkm4GRb7 

Credit for background music goes to Dye O (and to my husband for picking out the song): https://music.youtube.com/channel/UCVMwu8OTZGR-NgRPdW9YcBg

I met David through the private Facebook group called Donor Conceived Group for Donor Dads Via Being Sperm Donors Only, which may be of interest to other sperm donors. 

For those who would like to visit his personal website, you can go to drascic.net.  

Credit for the episode artwork goes to David's university newspaper archives, representing the ad he answered.

Credit for background music goes to Dye O (and to my husband for picking out the song): https://music.youtube.com/channel/UCVMwu8OTZGR-NgRPdW9YcBg