Sigh, OK, you got me, but it isn't PHB P11 where you need to look, but DMG p64 where it is really spelled out. The PHB is fairly vague, though 'attacking' MOST often refers to to-hit. In any case, it isn't really all that big a factor in the equation, as missile weapons already UNIVERSALLY fire with higher rates than once per round, so they normally represent a much greater damage potential overall than say, a sword (albeit that advantage shrinks somewhat at higher levels).
Weapon specialization doesn't really exist in core 1e. There are some rules for it in UA, though to be perfectly honest I don't think we used anything much from that book very often, except the spell lists and maybe some items. I don't recall exactly what UA has to say about missile weapon damage. Strength always applied to thrown weapons, though. Strength Bows are kind of an 'optional rule' anyway, mentioned only in passing on DMG p64 and being stated as not a 'standard' kind of equipment. At best you have to go find someone to make them for you at increased cost, although they DO add to BOTH attack and damage bonus! Frankly this was an option that we mostly disallowed in our games anway, as it was a bit over the top (if you allow it, even at a considerably GP expense, DEX becomes a mostly useless combat ability, at least until 2e).
Well, it is in the DMG on p64 as a very brief one sentence thing. IIRC the article you mention gives actual costs and whatnot.
Yes, I know about strength bows, as I said above. Its one of those ambiguous things, not strictly an 'optional' rule, as DMG p64 states their existence, but its not spelled out how that works, and it definitely has the character of being 'optional' in practice. I don't actually think its a very good rule to put in practice myself, as it makes the ultimate archer a purely STR-based guy (although interestingly the DMG doesn't actually state that the DEX and STR bonuses don't BOTH apply, although that would be a pretty nasty rule if say you got GoOP and an 18/00 STR bow!).
Anyway, all of this is much more cleanly handled in WotC era D&D. 5e could probably afford to allow a type of STR bow, it wouldn't hurt balance any, really.