Re-unite Tamara with her Biological Father

I always ask my mom to tell me the story of my real father. My mom always was in abusive relationships when she was younger, and her dad taught her that if a man yelled at her or hit her or didn't treat her right, to just up and leave. Before she got with my dad, she was married to a man who beat her and threatened to kill her and she left of course. When she met my father and got married to him, they were literally married two weeks and she got pregnant. They got in their first fight and she got scared and left him. When she found out that she was pregnant, she called him up and told him. He told her that she was pregnant before they got together and that I wasn't his. So my mom did the math and she was sure that I was his because she didn't have any sexual partners a ways before him. So she went on with her pregnancy on her own.
He called her after she had me and was looking to solve the problem. He asked her to come home and they'd forget that even happened. You see, my mom is a really bull headed person so she said no because he didn't think I was his and he was rude to her. 
My mom had moved to a little town about 2 hours away from where my dad lived at that time, and that's where we've lived ever since. Her last contact with him was when my adopted father (they got married) wanted to adopt me and she needed him to sign papers. He had since moved to the United States and had started a family of his own and I believe he sent the documents to mom, but she was very tight lipped.

It was'nt until about 2 months ago that I secretly decided to write him a letter about me, how I felt, how I was, and he actually replied! I can't tell you how good that made me feel knowing he made an effort. We have since sent a few letters back and forth.

I really, really need to see him, face to face. My parents, although loving me and providing everything I really needed, are in no position to help me financially, so here I am.

I need to raise money for my flights to the USA, so I can finally meet my biological father and either close, or hopefully re-unite with the lost piece of my heart that belongs to him.

I will meet him, no matter what it takes.