I have not these pictures, but I suppose that the features of microscopy could help the physician to manage the tuberculosis and to assurance the quality of sputum and the presence of other immunity cellular i.e. macrophages or lymphocytes
There is no open source database for microscopic findings of AFB positive samples. But there are numerous images in the public domain, some one can use these and prepare a open source. We see about 30-40 smears daily and if anybody is interested we can send the images on daily basis as many as you want.
I strongly recommend a personal supervisor who has experience with AFB to show you AFB "on the spot", if you are analysing patient´s material. For culture material, it should not be a problem after Ziehl-Neelsen staining.