| Lawrence |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Mar-2008 |
| Vint. LAWRENCE ENGINEERING SERVICE Wood Slide | $5.50 | 08-Mar-2008 | 4 |
| Vintage Lawrence SLIDE RULE w Instruction Book | $4.99 | 17-Mar-2008 | 1 |
| Lawrence Engineering Service Wood Slide Rule | $4.99 | 23-Mar-2008 | 1 |
| Vintage 1939 Lawrence Slide Rule Instruction B | $4.95 | 27-Mar-2008 | 1 |
| "LAWRENCE ENGINEERING WOOD 8 1/2"" SLIDE RULE" | $0.99 | 06-Mar-2008 | 1 |
| "VINTAGE--LAWRENCE--DELUXE--SLIDE RULE--PERU, | $0.99 | 23-Mar-2008 | 1 |
| Wooden Slide Rule Lawrence Engineering Svc w/ | $0.50 | 07-Mar-2008 | 1 |
| "Lawrence Slide Rule Engineer Ruler Made Peru, | $11.25 | 25-Mar-2008 | 0 |
| "Lawrence Slide Rule Engineer Ruler Made Peru, | $11.25 | 07-Mar-2008 | 0 |
| (3) Early Lawrence Engineering Service Ind Sli | $9.99 | 20-Mar-2008 | 0 |
| "Vintage Lawrence Engineering Deluxe Slide Rul | $9.99 | 27-Mar-2008 | 0 |
| LAWRENCE ENGINEERING SERVICE WOOD SLIDE RULE / | $9.99 | 02-Mar-2008 | 0 |
| Vintage Wood Lawrence Engineering Service Slid | $9.99 | 01-Mar-2008 | 0 |
| "Vintage Lawrence Wood Wooden 10 1/2"" Slide R | $9.95 | 02-Mar-2008 | 0 |
| Lawrence Engineering Service Slide Rule #70B P | $5.50 | 09-Mar-2008 | 0 |
| "Lawrence Deluxe Slide Rule Peru, Indiana Engi | $5.00 | 10-Mar-2008 | 0 |
| LAWRENCE ENGINEER SLIDE RULE TOOL w INSTRUCTIO | $4.99 | 20-Mar-2008 | 0 |
| LAWRENCE ENGINEERING SERVICE WOOD SLIDE RULE / | $4.99 | 16-Mar-2008 | 0 |
| 1939 LAWRENCE ENGINEERING SERVICE WOOD SLIDE R | $4.99 | 24-Mar-2008 | 0 |
| vint. LAWRENCE SLIDE RULE w/CASE NR | $4.99 | 24-Mar-2008 | 0 |
| LAWRENCE ENGINEERING SERVICE SLIDE RULE | $4.95 | 26-Mar-2008 | 0 |
| Vintage 1939 Lawrence Slide Rule Instruction B | $4.95 | 06-Mar-2008 | 0 |
| Vintage Wooden Slide Rule Lawrence DeLuxe+Orig | $2.99 | 16-Mar-2008 | 0 |
| Lawrence Engineering Service Deluxe Slide Rule | $2.95 | 02-Mar-2008 | 0 |
| #2343-Slide Rule Book Lawrence 1939 | $0.99 | 30-Mar-2008 | 0 |