Syntax Error?

My cold can't be so bad that I cannot write a simple SELECT statement,
but that's how it appears this morning. When I run this query I get no rows
returned:

jerrittwq=# select * from monitor where location = 'GW-24';
record | sample_id | location | sample_date | parameter | quant | units |
quali
ty
--------+-----------+----------+-------------+-----------+-------+-------+------
---
(0 rows)

Yet, there are multiple rows with location = 'GW-24':

jerrittwq=# select distinct location from monitor;
location
------------------
<snip>
'OMW-9'
'GW-24'
'FC-2'

What simple thing am I not seeing in my select statement?

Rich