A: There are numbers along the edge of your negatives that help to indicate which negative you would like us to print. On 35mm there are two sets of numbers. The first number is a whole number such as 1 then next to it is an A number such as 1A. The numbers go in sequence for example 1     1A     2     2A  ….. Please look carefully at the numbers and give us the number closest to the center of the negative frame. If two numbers fall within one negative frame give us both numbers for example 1 / 1A  or it could be something like  2A / 3. Do not use a whole number like 12 if the number in the frame is 12A. This could cause us to print the wrong picture.