| HP-41C soft. |  Kinetics - Lineweaver-Burk or Hofstee Plots | 197? | Hewlett-Packard |
| HP-83/85 disk | Kruskal-Wallis One-Way Anova Model 300-0012 | 198? | Hewlett-Packard |
| HP-67 soft. | Kubelka-Munk Diffusing Layer | 197? | Hewlett-Packard |
| HP-67 soft. | L-Attenuator | 197? | Hewlett-Packard |
| HP 9845 Series pack. | L-NET-Ladder Network Analysis Model 11.9519 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | LABEL-General Purpose Utility Model 64.9525 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | LABEL-Labels Plotted Output Model 64.9524 | 198? | Hewlett-Packard |
| HP-83/85 disk | Ladder Network Analysis Model 100-0006 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | Ladder Network Analysis Model 11.9006 | 198? | Hewlett-Packard |
| HP-83/85 disk | Latent Heat of Vaporization Model 500-0029 | 198? | Hewlett-Packard |
| HP-41C soft. | Latin Square ANOVA | 197? | Hewlett-Packard |
| HP-83/85 disk | Latin Square ANOVA: n=1 Model 300-0044 | 198? | Hewlett-Packard |
| HP-83/85 disk | Latin Square ANOVA: n>1 Model 300-0043 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | LBL Key-Changes Special Function Keys Under Program Control Model 63.9522 | 198? | Hewlett-Packard |
| HP-41C soft. | Learning Curve for Manufacturing Cost | 197? | Hewlett-Packard |
| HP 9845 Series pack. | Learning Curve Plot Model 52.9501 | 198? | Hewlett-Packard |
| HP-83/85 disk | Lease Analysis as Determined by the Lessee Model 000-0045 | 198? | Hewlett-Packard |
| HP-83/85 disk | Lease Income Model 000-0032 | 198? | Hewlett-Packard |
| HP-41C soft. | Lease with Add'nal Payments in Advance | 1978 | Hewlett-Packard |
| HP 9845 Series pack. | Least Squares Curve Fitting by Orthogonal Polynomials Model 21.9028 | 198? | Hewlett-Packard |
| HP-83/85 disk | Least Squares Fit, Multiple Y's per X Model 300-0020 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | Least Squares Maximum Entropy Method of Spectral Analysis Model 32.9506 | 198? | Hewlett-Packard |
| HP 2100 Series punched tape | LEAST SQUARES REGRESSION Model 22128-80001 | 197? | Hewlett-Packard |
| HP-83/85 disk | Least-Squares Fit Model 300-0002 | 198? | Hewlett-Packard |
| HP-83/85 disk | Length of a Curve Model 200-0044 | 198? | Hewlett-Packard |
| HP-67 soft. | Lens Calculations | 197? | Hewlett-Packard |
| HP-83/85 disk | Lens Calculations Model 500-0027 | 198? | Hewlett-Packard |
| HP-83/85 disk | Lens Problems Model 500-0004 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | LETTER (Creating Characters on 9872 Plotter) Model 64.9521 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | Library Accessions List Model 72.9527 | 198? | Hewlett-Packard |
| HP-83/85 disk | LIF Model 900-0049 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | Life Cycle Costing Model 53.5904 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | Life Table Analysis Model 22.9019 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | Line Mode/TEK Compatible Terminal Emulator for 9845C Model 61.9503 | 198? | Hewlett-Packard |
| HP-83/85 disk | Line Number Cross-Reference for BASIC Programs Model 900-0038 | 198? | Hewlett-Packard |
| HP-41C soft. | Line-Line Intersection | 197? | Hewlett-Packard |
| HP-67 soft. | Linear Cams | 197? | Hewlett-Packard |
| HP-83/85 disk | Linear Equations-Gaussian Reduction Model 200-0021 | 198? | Hewlett-Packard |
| HP 9845 Series pack. | Linear Least Squares with Uncertainties Model 22.9514 | 198? | Hewlett-Packard |
| HP-83/85 disk | Linear or Quadratic Program Problem Solving Model 000-0049 | 198? | Hewlett-Packard |
