xbrl497coverletter.htm - Generated by SEC Publisher for SEC Filing


August 14, 2018




U.S. Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549


Re:	Vanguard Bond Index Funds (the “Trust”)
	File No. 33-06001


Commissioners:

Pursuant to Rule 497(e) under the Securities Act of 1933, we hereby file exhibits containing
interactive data format risk/return summary information that reflects the risk/return summary
information in the supplement dated July 26, 2018, filed pursuant to Rule 497(e), for the Vanguard
Total Bond Market ETF, series of the above mentioned Trust.
If you have any questions or comments concerning the enclosed Amendment, please contact me
at (610) 669-7310.

Sincerely,


Alexander F. Smith, Esq.
Associate Counsel
The Vanguard Group, Inc.

Enclosures

cc: Asen Parachkevov, Esq.
U.S. Securities and Exchange Commission