Well, I did miss something. I had the morgue number but not Gallagher's number.
I was seeing that telephone number that comes up when you click on Gallagher's desk at the morgue but I never clicked on the number to send it to to Inventory and the cell to get her number.
When that was done, it was easy to get the tape recorder.
Thanks again for all the suggestion, MaG and UruKat.