Yes, and the solution is simple.

Floors that are not to be accessed by the public must be made
inaccessable to the public:  they do not exist, as far as the public is
concerned.  There are no visable buttons to those floors.

Obviously, staff does need access to the other floors.  These are
accessible by keys, operated in keyholes which are not marked, at least
not by letters or numbers, but only by position (top, middle, bottom) or
at most by discrete symbols understood only by staff.

Signage is not the answer; the elevator company is.  They can arrange the

sort of control panel described above.

-------------------------------------
name: amalyah keshet
director, visual resources / the israel museum, jerusalem
e-mail: [log in to unmask]
date: 07/29/96
visit our Web site at http://www.imj.org.il
-------------------------------------

On Sun, 28 Jul 1996 16:14:17 -0400  Frank E. Thomson wrote:
>We have an elevator in our museum that serves seven levels, four of
which are public.  The other areas are keyed off.  Some floors are
designated by numbers, others by letters.
>
>Obviously, many people find this arrangement complicated.  We have signs

in the elevator which say to go to exhibition X push button 1, etc.  This

does not appear to be very effective, and people are still confused.
>
>Have other people encountered similar issues, and if so what solutions
have been attempted.
>
>Frank E. Thomson, III
>Curator, Asheville Art Museum
>[log in to unmask]
>