The stimulus pictures for the NIPA are all available for you to download for free 

Click on the links below

You can download over 300 NIPA stimulus pictures here. Please remember that unless the child is a proficient reader, the pictures must not have written labels. 

You can download  a series of PDFs with the stimulus pictures grouped according to the session word lists here.

Some of the session plans do not have stimulus pictures because they are supposed to be presented for the child to listen or because the complexity of the stimulus picture would distract the child from listening

You can download the guide to making your own stimulus words for sessions from the NIPA manual (p18-19) here: How to Choose Stimulus words for PA