Browse the guides
4 editions, 254 scanned pages. Each guide opens in the reader with the machine-read text beside the original scan.

1930
Eighth Edition
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1932
Ninth Edition
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1935
Tenth Edition
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1937
Eleventh Edition
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A note on the scans
Each scanned page shows a two-page spread of the original book (just as the book was imaged), so the text and the scan line up one for one. Where the table of contents lists printed page numbers, the reader shows the equivalent scanned page.