Sergey Minov and Daniel L. Schwartz (eds.), "Carrier of letter to" in last modified March 11, 2022, http://syriaca.org/keyword/carrier-of-letter-to
  
    
      
        Carrier of letter to
        
          
          
        
        
        http://syriaca.org/keyword/carrier-of-letter-to
        An otherwise undefined relationship disclosed when an exchange of one or more letters references a third party.