From Crochet at About.com:
Light Beams Lighthouse Free Chart, Suitable For Various Types of Needlecrafts

This chart is free for your own personal use only.

Chart copyright (c) 2000 by Sandi Marshall, licensed to About.com, Inc.

I charted (and partially revised) this design, which was originally printed as a finished piece only (no chart) in the year 1915 in Manual of Crocheting, No. 5. It was part of a larger scene in the 1915 pattern book. The instructions on this page were not part of the 1915 book; I added them. -- Sandi Marshall. Info on length of copyright protection terms: U.S. Government Copyright Office - http://www.loc.gov/copyright

To make a crocheted background to cross-stitch the design on, starting chain is 41 chains for single crochet or 40 chains for afghan stitch. Work this background for 40 rows.

Working the Chart in Filet Crochet
For a 4 dc mesh, beginning chain is 121, plus chain 3, (which will count as first dc of first row) for a total of 124 chains in the starting chain. Begin by working a double crochet in the 5th chain from the hook. Follow chart for placement of solid mesh and open mesh for each row. For a refresher on how to do open and solid mesh, see Basics link below.

Chart is worked starting at the bottom right; work first row right to left. Second row is worked left to right. Continue alternating row directions in this same manner, following chart.

To learn how to add color outlines to accent portions of the finished filet crochet piece, see http://crochet.about.com/library/blline.htm

Approximate finished sizes in filet crochet (once through one chart, worked in 4 dc mesh):
With size 5 thread: (205 yards) and a size US 4 steel hook, finished size is about 11.1 inches x 12.7 inches.
With size 10 thread: (182 yards) and a size US 7 steel hook, finished size is about 9.2 inches x 10 inches.
With size 20 thread: (171 yards) and a size US 9 steel hook, finished size is about 8.8 inches x 9.6 inches.
With size 30 thread: (160 yards) and a size US 11 steel hook, finished size is about 8.4 inches x 9.2 inches.
With fingering/baby weight yarn: (400 yards) and a size US F hook, finished size is about 28 inches x 28.8 inches.
With sport weight yarn: (464 yards) and a size US G hook, finished size is about 32 inches x 32.8 inches.
With worsted weight yarn: (528 yards) and a size US I hook, finished size is about 36 inches x 36.8 inches.

Gauge:
With size 5 thread: 5 squares = 1.4 inches, 5 rows = 1.6 inches
With size 10 thread: 5 squares = 1.2 inches, 5 rows = 1.3 inches
With size 20 thread: 5 squares = 1.1 inches, 5 rows = 1.2 inches
With size 30 thread: 5 squares = 1 inch, 5 rows = 1.1 inches
With fingering/baby weight yarn: 5 squares = 3.5 inch, 5 rows = 3.6 inches
With sport weight yarn: 5 squares = 4 inch, 5 rows = 4.1 inches
With worsted weight yarn: 5 squares = 4.5 inch, 5 rows = 4.6 inches

Basics in How to Do Filet Crochet, here: http://crochet.about.com/library/weekly/aa050298.htm

Do not post on your own web site (or on an Internet Bulletin Board) the actual chart or instructions that are on this page. Please do not redistribute (with or without charge) in any way. Instead, you are welcome to give to anyone the URL of this page so that anyone who would like the chart may come here for themselves and benefit from everything else this site has to offer. Thank you.

URL for this page is http://crochet.about.com/library/nlighthouse1.htm

Questions about copyrights? See:
U.S. Government Copyright Office - http://www.loc.gov/copyright
US Gov Copyright FAQ - http://www.loc.gov/copyright/faq.html
Copyright Myths Explained - http://www.templetons.com/brad/copymyths.html

You may also give out the following URL for anyone who would like to have this lighthouse chart: http://crochet.about.com/library/bllighthouse1.htm - Thank you!

For many more charts, see: Index of Free Charts: http://crochet.about.com/library/blfreecharts.htm
Crochet Homepage: http://crochet.about.com