Letter of Recommendation advice please??

Okay so last semester I studied abroad and interned at mental health outpatient facility for individuals with schizophrenia, bipolar disorder, and unspecified personality disorders. It was a really great experience and my supervisor really really liked me. I asked him to write me a letter of recommendation for an REU this summer and he agreed. I emailed him about it on like December 25th, just sending him my resume, my research interests, transcript, and link to submit the letter; however,... Letter of Recommendation advice please??
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums