| Lawrence |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Jun-2008 |
| LAWRENCE ENGINEERING SERVICE WOODEN SLIDE RULE | $9.95 | 19-Jun-2008 | 1 |
| Vintage LAWRENCE ENGINEERING Wood Slide Rule 8 | $9.00 | 03-Jun-2008 | 2 |
| Concrete Slide Rule Olney Flora Lawrenceville | $8.00 | 23-Jun-2008 | 3 |
| Vintage Old Wooden Lawrence 10 Inch Slide Rule | $5.99 | 30-Jun-2008 | 1 |
| "Lawrence Slide Rule Engineer Ruler Made Peru, | $5.25 | 20-Jun-2008 | 1 |
| "Vintage Lawrence Engineering Service 10"" Sli | $0.99 | 29-Jun-2008 | 1 |
| "Vintage Wood Engineering Slide Rule~Lawrence, | $9.99 | 15-Jun-2008 | 0 |
| Lawrence Engineering Slide Rule Sliderule Vint | $9.99 | 11-Jun-2008 | 0 |
| LAWRENCE Deluxe Slide Rule | $7.99 | 06-Jun-2008 | 0 |
| Wood LAWRENCE SLIDE RULE Proportion Calculator | $7.99 | 04-Jun-2008 | 0 |
| Lawrence Engineering Service Wooden Slide Rule | $6.99 | 02-Jun-2008 | 0 |
| Old Lawrence Engineering Slide Rule | $5.95 | 28-Jun-2008 | 0 |
| "Lawrence Slide Rule Engineer Ruler Made Peru, | $5.25 | 04-Jun-2008 | 0 |
| Vintage Wood LAWRENCE Engineering SLIDE RULE 1 | $4.99 | 22-Jun-2008 | 0 |
| Lawrence Engineering Wooden Advertising Slide | $4.99 | 02-Jun-2008 | 0 |
| "Lawrence Original Slide Rule, original packag | $3.99 | 29-Jun-2008 | 0 |
| VINTAGE LAWRENCE ENGINEERING SERVICE 10B SLIDE | $2.99 | 29-Jun-2008 | 0 |
| Old Lawrence Wood Slide Rule w/ Case | $2.99 | 29-Jun-2008 | 0 |
| LAWRENCE WOOD SLIDE RULE 10-B WITH CASE MADE I | $0.99 | 15-Jun-2008 | 0 |
| The Lawrence engineering slide rule | $0.99 | 03-Jun-2008 | 0 |