The compilers of the Official Records excised casualty lists and other detailed lists from most reports to make the massive collection a little more manageable. The excised lists are (or were) available at the National Archives for study. I transcribed several of them. That was many years ago; and I have since heard that researchers are no longer permitted to handle those documents due to their fragile condition. I don't know if they were ever microfilmed. If not, it might be possible to get a National Archives employee to make photocopies of them.