| Source: St. Louis Aviation News / Aviation Pictorial News (1946-1948) Location: Oversize flat / St.L. / 05 / Sa24a | |
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| Corporate Name: | Helbert Aviation Enterprises |
| Address: | 7724 Big Bend Blvd. |
| Advertisement: | yes |
| Volume: | 2 |
| Issue: | 9 |
| Date of Publication: | April 1948 |
| Page: | 5 |
