EATON VANCE MUNICIPAL BOND FUND L.P.
SUPPLEMENT TO PROSPECTUS DATED MAY 1, 1997
1. Effective immediately, under the table "Shareholder and Fund Expenses" the
Maximum Sales Charge Imposed on Purchases is 4.75%. As a result, in the EXAMPLE
section of the table the expenses paid by a shareholder would be slightly
higher.
2. Effective immediately, the sales charge table under "How to Buy Fund Shares"
is replaced (except for the footnotes) with the following:
<TABLE>
Sales Charge Sales Charge Dealer Commission
as Percentage of as Percentage of as Percentage of
Amount of Purchase Offering Price Amount Invested Offering Price
- -----------------------------------------------------------------------------------------------------------
<S> <C> <C> <C>
Less than $25,000 4.75% 4.99% 4.50%
$25,000 but less than $100,000 4.50 4.71 4.25
$100,000 but less than $250,000 3.75 3.90 3.50
$250,000 but less than $500,000 3.00 3.09 2.75
$500,000 but less than $1,000,000 2.00 2.04 2.00
$1,000,000 or more 0.00* 0.00* 0.50
</TABLE>
September 1, 1997 MB1/1PS
