Karissa,
I understand what you are going through. Reading all of the advice... there is a lot that is good.
Some is marginal, though.
I would recommend that you try to 'walk away' from this... as quickly as possible.
The clothes - Goodwill. He can buy more. (Plus... even if he cain't... you get to mental him wearing a barrel like in a cartoon.)
The letters and photos... I recommend tossing them. All you will be doing by 'sending them' to anyone is making it look like you are a 'stalker'... or psychotic... or something similar. If you _do_ decide to send the letters and photos... send copies, not the originals.
Also - just send them to his last known local congregation in California. THEY will know where he went - and will surely track him down - if they want to. (He has a 'publishers' card that he has to get transferred to his new location.)
If you _really_ want to stir things up... and if he was talking 'marriage' with you... in your letter to them just mention 'polygamy', 'lawyer', 'lawsuit' and 'Watchtower Bible & Tract Society' all in the same sentence.
I still say... change your phone number - at the very least. Do you want to get phone calls from him at all hours? Perhaps him trying to 'come back' to you? I don't think so. Change THAT number!!!
As an alternative - make sure that you have an answering machine. Be sure to let it 'pick-up' any unknown numbers. Also - if he tries to contact you - leaving messages... try to keep those messages. You may need them later.
At the very least - make sure that you have Caller-ID. Some fancy new phones allow you to do a 'call-block', and you should do your ever-best to make sure that he NEVER gets through via phone.
The important thing to remember is that YOU need to be in control - emotionally, and physically. Not him.
Regards,
Jim TX