Multicomp (from Newark Electronics, 1-800-463-9275)
Bicolor LED 92N5363, red/green, 5 volts (1-49: 81 each, 50-99: 69 each, 100+: 62 each)
Bicolor LED 92N5364, red/yellow, 5 volts (1-49: 81 each, 50-99: 69 each, 100+: 62 each)
Bicolor LED 92N5365, green/yellow, 5 volts (1-49: 81 each, 50-99: 69 each, 100+: 62 each)

Western Rail Products
4700 SW Macadam Ave. Suite 400, Portland, OR 97201
Red 1.8mm LED, 307 LED1R, (3 for $1.95 or 65 each)

N.J. International, Inc.
77 West Nicholai St., Hicksville, NY 11801
pre-made N-scale signals or parts for them
#2100 2-light dwarf
#4203 2-hole signal disc head

Circuitron
800-7440-25 general purpose clear 3mm, 30mA, lamps (25 for $10.95 or under 44 each)
800-7418-12 very high output micro-lamp, 1.4mm, 3 volts, 26 mA (12 for $16.95 or $1.41 each)

DEKA
Distributed by Decart, Inc., Morrisville, VT 05661
Transparent glass stain, #28 light red, #33 light green

Pactra Industries, Inc.
Los Angeles, CA 90028
Tiffany Glass glass stain, amber, K3

3M
Scotchlok #054007-06128 Self-Stripping Auto-Tap Connectors 905
Run: #12 to #18 (ignore the box which says #14 to #18)
Tap: #18 to #22
($6.24 per box of 50 or a little over 12 each)

All Electronics Corporation
1-800-826-5432, L.A., California, 90006
LP-7218, 10 volts, 27 mA, Grain-of-wheat lamps (3mm), 100 for $45 or 45 each
LP-715, 5 volts, 115 mA, Grain-of-wheat lamps (3mm), 100 for $45 or 45 each
LP-1465, 14 volts, 65 mA, Grain-of-wheat lamps (3mm), 100 for $25 or 25 each
MLED-1, red LED, 3mm, 100 for $8.00 or 8 each
MLED-2, green LED, 3mm, 100 for $8.00 or 8 each
MLED-3, yellow LED, 3mm, 100 for $8.00 or 8 each
LED-67, red/green bicolor LED, 3 leads, 100 for $29.00 or 29 each
LED-66, yellow/green bicolor LED, 2 leads, 100 for $15.00 or 15 each
TX-62, 6 volts, 2 amps, power transformer, $4.00 (for panel lights)
TX-124, 12 volts, 4 amps, power transformer, $7.50 (for structure lighting)
TX-125, 12 volts, 5 amps, power transformer, $11.00 (for structure lighting)
TX-242, 24 volts, 2 amps, power transformer, $7.50 (for uncouplers)