Handling spaces in logcat

One of the external libraries that my app uses have spaces in its logcat tag:

Log.d("Some External Library", "Debug Message");

How do I write the filter-spec in the logcat command to handle spaces? Logcat inside eclipse was able to filter it but I prefer the command line.

I've tried the following and they don't work:

adb logcat -s "Some External Library"
adb logcat -s Some\ External\ Library
adb logcat -s Some External Library