Use a Template If an MTA is needed, choose the simplest standard agreement that will accomplish the transfer. In 1999, the NIH published the Simple Letter MTA template, and has recommended it for the transfer of many types of materials. It is accepted by almost all universities. The NIH also has two other simple MTAs for different classes of materials: living organisms and human tissues and specimens. NIH Simple Letter Agreement for the Transfer of Materials NIH MTA for the Transfer of Organisms NIH MTA for the Transfer of Human Materials Return to MTA Toolkit