Song: "Mamas, Don't Let Your Babies Grow Up To Be Cowboys"
Artist: Willie Nelson & Waylon Jennings
Peak position on the Cashbox Singles chart: #44
Number of weeks on the Cashbox Singles chart: 9
(8 weeks in the Top 100)
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| February 4, 1978 | 103 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| February 11, 1978 | 98 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| February 18, 1978 | 84 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| February 25, 1978 | 78 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| March 4, 1978 | 68 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| March 11, 1978 | 54 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| March 18, 1978 | 47 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| March 25, 1978 | 44 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
| April 1, 1978 | 48 | Mamas, Don't Let Your Babies Grow Up To Be Cowboys | Willie Nelson & Waylon Jennings | RCA 11198 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.