Prescriptive question

[Peter A. McGraw]

I know better than to ask the denizens of this list to BE prescriptive, but
in this case I'm not sure whether a prescriptive "rule" exists anymore,
even for prescriptivists.  I've tried the Chicago Manual of Style on this
one, but no luck.  I don't have any other style manuals handy.

The case is embodied in sentences like:

"The Burgville Philharmonic invites you to subscribe to our upcoming
concert season."

Have even the prescriptivists dropped an earlier insistence on changing
"our" to "its," or is this prescription alive and well for formal writing?

Peter Mc.

*****************************************************************
Peter A. McGraw       Linfield College        McMinnville, Oregon
******************* pmcgraw at linfield.edu ************************