Weekly Shonen Jump #501

When was Weekly Shōnen Jump #501 published?

Weekly Shōnen Jump #501 has a cover date of August 20, 1978 (it went on sale earlier, on July 21, 1978), published by Shueisha in Japan.

Which manga series were featured in Weekly Shōnen Jump #501?

Weekly Shōnen Jump #501 (cover-dated August 20, 1978) featured Kochikame, among other ongoing serializations.