I need to stich photographs together in sections

I am need of a freelancer who has high quality experience in stitching photographs together using a stitching software. I work for a structural engineering company and we have had to do a study report on a heritage wall that is miles long! We have taken photographs of each section of the wall, but for us to input these into our report we need to stitch them together to create longer sections of the wall. Each section would be around 8-10 photographs stitched together. Please note we have 600-700 separate photographs, so this will create a lot of sections! I attach an example of the photographs