| Lawrence |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Mar-2007 |
| "SLIDE RULE-LIKE~""CODE MAKER""~LAWRENCE ENGIN | $37.87 | 28-Mar-2007 | 11 |
| "SLIDE RULE-LIKE~""CODE MAKER""~LAWRENCE ENGIN | $37.00 | 21-Mar-2007 | 1 |
| Lawrence Deluxe Slide Rule | $11.49 | 08-Mar-2007 | 8 |
| CIRCA 1940'S LAWRENCE SLIDE RULE WITH BOOK AND | $9.95 | 14-Mar-2007 | 1 |
| 1951 Lawrence Slide Rule with leather case & B | $8.50 | 27-Mar-2007 | 5 |
| Vintage Wood Slide Rule Lawrence Eng. Peru Ind | $7.50 | 04-Mar-2007 | 3 |
| Lawrence Deluxe Slide Rule Wooden Slide Rule a | $6.99 | 14-Mar-2007 | 1 |
| "10 Inch Slide Rule, Lawrence Slide Rule, Orig | $6.99 | 07-Mar-2007 | 1 |
| Lawrence Slide Rule ~ Vintage ~ In Box | $6.82 | 08-Mar-2007 | 5 |
| VINTAGE WOODEN SLIDE RULE LAWRENCE ENG SVS. IN | $5.50 | 02-Mar-2007 | 2 |
| -Nice- Early -Lawrence Engineering- Slide Rule | $4.99 | 22-Mar-2007 | 1 |
| VINTAGE 1939 LAWRENCE SLIDE RULE INSTRUCTION B | $2.99 | 31-Mar-2007 | 1 |
| Slide Rule Lawrence Engineering Service Wabash | $2.99 | 20-Mar-2007 | 1 |
| Lawrence Engineering 250-B slide rule with cas | $2.25 | 11-Mar-2007 | 2 |
| Vintage Lawrence Slide Rule with Box & Booklet | $0.99 | 03-Mar-2007 | 2 |
| "3 VINTAGE SLIDE RULES CASES LAWRENCE, STERLIN | $24.99 | 18-Mar-2007 | 0 |
| Vintage Slide Rule Lawrence Engineering Servic | $10.00 | 21-Mar-2007 | 0 |
| 1939 LAWRENCE SLIDE RULE INSTRUCTION BOOK & SL | $9.99 | 16-Mar-2007 | 0 |
| Vintage Lawrence Wooden Slide Rule 8-B | $9.99 | 12-Mar-2007 | 0 |
| Vintage Slide Rule Lawrence Engineering Servic | $9.50 | 16-Mar-2007 | 0 |
| Lawrence Deluxe Slide Rule--Made in U.S.A. | $9.00 | 10-Mar-2007 | 0 |
| Lawrence Deluxe Slide Rule--Made in U.S.A. | $9.00 | 07-Mar-2007 | 0 |
| Vintage Lawrence Engineering Wood Wooden Slide | $7.99 | 23-Mar-2007 | 0 |
| Vintage Lawrence Engineering Wood Wooden Slide | $7.99 | 30-Mar-2007 | 0 |
| VINTAGE LAWRENCE WOODEN SLIDE RULE w/INSTRUCTI | $5.99 | 21-Mar-2007 | 0 |
| VINTAGE SLIDE RULE LAWRENCE ENGINEERING 1935-3 | $5.00 | 18-Mar-2007 | 0 |
| Vintage Slide Rule Lawrence Engineering Servic | $4.99 | 21-Mar-2007 | 0 |
| Lawrence Slide Rule | $4.99 | 18-Mar-2007 | 0 |
| Vintage Lawrence Wooden Slide Rule 8-B | $4.99 | 20-Mar-2007 | 0 |
| vintage slide rule Lawrence Engineering Indian | $4.99 | 06-Mar-2007 | 0 |
| #2343-Slide Rule Book Lawrence 1939 | $4.00 | 21-Mar-2007 | 0 |
| "LAWRENCE ENGINEERING SERVICE,{SLIDE RULE}" | $3.50 | 21-Mar-2007 | 0 |
| 1939 Lawrence Slide Rule Instruction Booklet! | $3.33 | 28-Mar-2007 | 0 |
| Lawrence Slide Rule - Original Box | $3.25 | 23-Mar-2007 | 0 |
| "LAWRENCE SLIDE RULE INSTRUCTION BOOK 1951 PER | $2.00 | 24-Mar-2007 | 0 |
| "VINTAGE--LAWRENCE DELUXE SLIDE RULE--PERU, IN | $1.99 | 04-Mar-2007 | 0 |
| 10 INCH LAWRENCE ENGINEERING SERVICE SLIDE RUL | $0.99 | 12-Mar-2007 | 0 |