The family portrait photo would have been taken around 1971, seems a little late for a black-and-white photo.
Just guessing the other two would probably have been 1970ish - also seem a little late for B&W photos, especially since basically all of the Barry’s 1960’s Hawaii photos I can think of were in color.
The top photo doesn’t look peculiar to me, but the next two look almost as if his head was pasted on. This casual observations is not good proof that they are fake though. I don’t think i’ve ever seen these pictures before. You seem to have a knack for researching this stuff.