Deductions & credits

Brittany, Thank you so much for your response. 

I do have another question regarding the rescue  writing a letter to me the same way as it would for any other donor. Do I need a letter for every out of pocket expense (donation) paid by me to the rescue. The difficulty I find here is that the rescue would end up writing me literally hundreds of letters. Is it okay to tally all expenses (donations) and write on single letter?