From the files of the ARRL Automated Mail Server, (info@arrl.org):

Prepared as a membership service by the American Radio Relay 
League, Inc., Technical Information Service.

file: pltones.txt    updated: 03-09-95

Thank you for requesting the following information from the ARRL 
Technical Information Service or the ARRL Automated Mail Server 
(info@arrl.org). ARRL HQ is glad to provide this information free 
of charge as a service to League members and affiliated clubs.

If you have any questions concerning the reproduction or 
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(email: mtracy@arrl.org).

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Motorola PL Tone cross reference
 
XZ      67.0
XA      71.9
WA      74.4
XB      77.0
WB      79.7
YZ      82.5
YA      85.4
YB      88.5
ZZ      91.5
ZA      94.8
1Z      100.0
1A      103.5
1B      107.2
2Z      110.9
2A      114.8
2B      118.8
3Z      123.0
3A      127.3
3B      131.8
4Z      136.5
4A      141.3
4B      146.2
5Z      151.4
5A      156.7
5B      162.2
6Z      167.9
6A      173.8
6B      179.9
7Z      186.2
7A      192.8
M1      203.5
8Z      206.5
M2      210.7
M3      218.1
M4      225.7
9Z      229.1
M5      233.6
M6      241.8
M7      250.3

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The members and HQ staff would like to thank the following people 
for their contributions to this information file:

AA2VB VE3RPH

Send any additional information or changes to mtracy@arrl.org. 

73 from ARRL HQ.