Being a friend, I did indeed go to the museum and found viewing room #4 but alas, there was not a single sculpture in that gallery. So I inquired of my friend about this mystery. She/he was unable to get back to me until later that evening, but then told me that I had gone to the wrong museum but not to worry the same key could be found in a local art store near where I lived. She seemed a bit stressed, so I did not make a point of the "wrong museum" being the one he had originally directed me to.
I googled the location of the art store and discovered it was not anywhere near where I lived but if one store had the key then why not another. After a bit of searching, I found an establishment with the same key and I picked it up the following day. I then called my friend again, only to discover that he had gone out of town until next Monday, which apparently was why she needed my help in the first place.
The key, however, had to be delivered by this Friday in order for the task to be successfully completed. Since my friend would not be back in town until Monday and she had not given me the destination for the delivery, it would seem like all was for naught. Further, he was not answering her cell phone.
Making one last attempt to salvage the endeavor, I called my friend's colleague from work and inquired about his knowledge, if any, of the process and discovered that the whole enterprise had been rethought and not only was delivery of the key not needed by Friday, apparently the key was not longer going to be required at all. So in the end my help was entirely unnecessary.
I have been sitting here reviewing this little escapade, which briefly goes something like this: a favor is asked of me, the favor is outlined with incorrect information, when I attempt to comply using initial instructions and discover the bad link, new allegedly simpler information is discovered, which too proves to be inaccurate. Through my own devices, I managed to acquire necessary item, which cannot be delivered in a timely manner, but which is no longer needed in any case. My friend managed to delivered incorrect information or instructions each and every time she spoke to me and neglected to tell me the entire project was no longer necessary before she up and left town.
After due consideration, I have come to the conclusion that I can shorten my list of friends by one inconsiderate flake and I now consider the entire adventure a complete success.