All issues of Nucl. Phys. B Proc. Suppl. are available online (TAU subscription since 1995 only). But the best way to look for a specific paper is through SPIRES.

Lattice 2005, PROCEEDINGS, 23rd International Symposium On Lattice Field Theory, Dublin, Ireland, July 25-30, 2005.
By A. Irving, C. McNeile, and C. Michael (eds.)
Proc. Sci. LAT2005 (2005) [SPIRES]

Lattice 2004, PROCEEDINGS, 22nd International Symposium on Lattice Field Theory, Batavia, Illinois, 21-26 June 2004. By G. Bodwin, D. Sinclair, E. Eichten, D. Holmgren, Andreas S. Kronfeld, P. Mackenzie, M. Okamoto, J. Simone, A. El-Khadra, (eds.)
Nucl. Phys. B, Proc. Suppl. 140 (2005) 1-896 [SPIRES]

Lattice 2003, PROCEEDINGS, 21st International Symposium On Lattice Field Theory, Tsukuba, Ibaraki, Japan, July 15-19, 2002.
By S. Aoki, S. Hashimoto, N. Ishizuka, K. Kanaya, Y. Kuramashi (eds.)
Nucl. Phys. B, Proc. Suppl. 129/130 (2004) [SPIRES]

Lattice 2002. PROCEEDINGS, 20th International Symposium On Lattice Field Theory, Boston, Massachusetts, June 24-29, 2002.
By R. Edwards, J. Negele, D. Richards (eds.)
Nucl. Phys. B, Proc. Suppl. 119 (2003) [SPIRES]

LATTICE 2001. PROCEEDINGS, 19TH INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, BERLIN, GERMANY, AUGUST 19-24, 2001.
By M. Mueller-Preussker, W. Bietenholz, K. Jansen, F. Jegerlehner, I. Montvay, G. Schierholz, R. Sommer, U. Wolff (eds.).
Nucl. Phys. B, Proc. Suppl. 106 (2002) [hep-lat]

LATTICE 2000. PROCEEDINGS, 18TH INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, BANGALORE, INDIA, AUGUST 17-22, 2000.
By T. Bhattacharya, R. Gupta, A. Patel.
Nucl. Phys. B, Proc. Suppl. 94 (2001) [hep-lat (hyperlinked PDF)]

LATTICE '99. PROCEEDINGS, 17TH INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, PISA, ITALY, JUNE 29 - JULY 3, 1999.
By M. Campostrini, S. Caracciolo, L. Cosmai, A. Di Giacomo, F. Rapuano, P. Rossi.
Nucl. Phys. B, Proc. Suppl. 83-84 (1999) 1-1006 [SPIRES]

LATTICE '98. PROCEEDINGS, 16TH INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, BOULDER, USA, JULY 13-18, 1998.
By T. DeGrand, C. Detar, R. Sugar, D. Toussaint.
Nucl. Phys. B, Proc. Suppl. 73 (1999) 1-968 [hep-lat]

LATTICE '97. PROCEEDINGS, 15TH INTERNATIONAL SYMPOSIUM ON LATTICE FIELD  THEORY, EDINBURGH, SCOTLAND, JULY 22-26, 1997.
By C.T.H. Davies, I.M. Barbour, K.C. Bowler,  R.D. Kenway, B.J. Pendleton, D.G. Richards.
Nucl. Phys. B, Proc. Suppl. 63 (1998) 1-1028. [hep-lat]

LATTICE '96. PROCEEDINGS, 14TH INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, ST. LOUIS, USA, JUNE 4-8, 1996.
By C. Bernard, M. Golterman, M. Ogilvie  (Washington U., St. Louis), J. Potvin (St. Louis U.). 1997.
Nucl. Phys. B, Proc. Suppl. 53 (1997) 1-1037 [SPIRES]

LATTICE '95. PROCEEDINGS, INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, MELBOURNE, AUSTRALIA, JULY 11-15, 1995.
By T.D. Kieu, B.H.J. McKellar, A.J. Guttmann  (Melbourne U.). 1996.
Nucl. Phys. B, Proc. Suppl. 47 (1996) 1-834 [SPIRES]

LATTICE '94. PROCEEDINGS, 12TH INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, BIELEFELD, GERMANY, SEPTEMBER 27 - OCTOBER 1, 1994.
By F. Karsch, J. Engels, E. Laermann, B. Petersson  (Bielefeld U.). 1995.
Nucl. Phys. B, Proc. Suppl. 42 (1995) 1-967 [SPIRES]

LATTICE '93. PROCEEDINGS, INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, DALLAS, USA, OCTOBER 12-16, 1993.
By T. Draper (Kentucky U.), S. Gottlieb (Indiana U.),  A. Soni (Brookhaven), D. Toussaint (Arizona U.). 1994.
Nucl. Phys. B, Proc. Suppl. 34 (1994) [SPIRES]

LATTICE '92. PROCEEDINGS, INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, AMSTERDAM, NETHERLANDS, SEPTEMBER 15-19, 1992.
By J. Smit (Amsterdam U.), P. van Baal  (Utrecht U. & Leiden U.). 1993.
Nucl. Phys. B, Proc. Suppl. 30 (1993)

LATTICE 91. PROCEEDINGS, INTERNATIONAL SYMPOSIUM ON LATTICE FIELD THEORY, TSUKUBA, JAPAN, NOVEMBER 5-9, 1991.
By M. Fukugita (Kyoto U.), Y. Iwasaki, A. Ukawa (Tsukuba U.),  M. Okawa (KEK, Tsukuba). 1992.
Nucl. Phys. B, Proc. Suppl. 26 (1992)

LATTICE 90. PROCEEDINGS, INTERNATIONAL CONFERENCE ON LATTICE FIELD THEORY, TALLAHASSEE, USA, OCTOBER 8-12, 1990.
By U.M. Heller, A.D. Kennedy, S. Sanielevici (Florida  State U.). 1991. Amsterdam, Netherlands: North-Holland (1991) 790 p.
Nucl. Phys. B, Proc. Suppl. 20 (1991)

LATTICE 89. PROCEEDINGS, SYMPOSIUM ON LATTICE FIELD THEORY, CAPRI, ITALY, SEPTEMBER 18-21, 1989.
By N. Cabibbo, E. Marinari, G. Parisi, R. Petronzio  (Rome U., TorVergata), L. Maiani, G. Martinelli (Rome U.), R. Pettorino (Naples U.). 1990.
Nucl. Phys. B, Proc. Suppl. 17 (1990)

LATTICE 88. PROCEEDINGS, SYMPOSIUM, BATAVIA, USA, SEPTEMBER 22-25, 1988.
By A.S. Kronfeld, P.B. Mackenzie (Fermilab). 1989.
NUCL. PHYS. B, PROC. SUPPL. 9 (1989)

FIELD THEORY ON THE LATTICE. PROCEEDINGS, INTERNATIONAL SYMPOSIUM, SEILLAC, FRANCE, SEPTEMBER 28 - OCTOBER 2, 1987.
By A. Billoire, R. Lacaze, A. Morel, O. Napoly,  J. Zinn-Justin (Saclay). 1988.
NUCL. PHYS. B (PROC. SUPPL.) 4 (1988)

LATTICE GAUGE THEORY '86. PROCEEDINGS, NATO ADVANCED RESEARCH WORKSHOP, UPTON, USA, SEPTEMBER 15-19, 1986.
By H. Satz, I. Harrity, J. Potvin (Bielefeld U. & Brookhaven). 1987.
NEW YORK, USA: PLENUM (1987) 430 P.
(NATO ASI SERIES. SERIES B, PHYSICS, 159).

LATTICE GAUGE THEORY. A CHALLENGE IN LARGE SCALE COMPUTING. PROCEEDINGS, NATO WORKSHOP, WUPPERTAL, F.R. GERMANY, NOVEMBER 5-7, 1985.
By B. Bunk, K.H. Mutter, K. Schilling (Wuppertal U.). 1986.
New York, Usa: Plenum ( 1986) 334 P.
(Nato Asi Series. Series B, Physics, 140).

ADVANCES IN LATTICE GAUGE THEORY. PROCEEDINGS, CONFERENCE, TALLAHASSEE, USA, APRIL 10-13, 1985.
By D.W. Duke, J.F. Owens (Florida State U.). 1986.
Singapore: World Scientific (1985) 441p.

GAUGE THEORY ON A LATTICE: 1984. PROCEEDINGS, ARGONNE NATIONAL LABORATORY WORKSHOP, ARGONNE, USA, APRIL 5-7, 1984.
By C. Zachos, E. Kovacs, D. Sivers (Argonne),  W. Celmaster (Northeastern U.). 1984.
Argonne, Usa: Nat. Lab. (1984) 338p.