Gosh, Batman -- an inexperienced girl is bound to get hurt pursuing crooks. 
- — Robin
Batman #139 is an issue of the series Batman (Volume 1) with a cover date of April, 1961.
Synopsis for "The Blue Bowman"
Batman and Robin meet Commissioner Gordon atop police headquarters where the lawman provides a tip that Signalman will be at Gotham Coal Refinery. They find Signalman there in a new costume now calling himself Blue Bowman. The villain uses a variety of trick arrows to foil the heroes as he escapes. After freeing themselves, Batman finds a record along with a note left by Blue Bowman explaining his new origin.
On the record, Blue Bowman reveals how he met Green Arrow's enemy Bulls-Eye in prison. The idea of trick arrows to commit crimes instead of stopping them inspires Signalman to adopt the persona of Blue Bowman. Batman and Robin track the newly-named criminal to Gotham Candle Company where trick arrows stop the heroes once again -- this time captured in giant candles. The caped crusaders eventually free themselves and track Blue Bowman to Gotham Archery Company. This time, Batman is prepared and uses a number of trick batarangs to counter the trick arrows. Blue Bowman and his gang are quickly captured and receive a free ride to state prison in the Batmobile.
Appearing in "The Blue Bowman"
Featured Characters:
Supporting Characters:
Antagonists:
- Blue Bowman
- Bulls-Eye (Single appearance) (Flashback only)
Other Characters:
- Green Arrow (Mentioned only)
Locations:
- Gotham City
- GCPD Headquarters
- Gotham Archery Company
- Gotham Candle Company
- Gotham Coal Refinery
Items:
- Bat-Signal
- Blue Bowman's Trick Arrows
- Trick Batarangs
Vehicles:
Synopsis for "The Island of 1,000 Traps"
Batman and Robin travel to George Milo's private island to capture him when their Batlaunch is sunk by an artificial shark. The heroes comes ashore and encounter a number of traps including a lethal electrical field, a tank sporting an iron fist, a trap door with an awaiting octopus, and a deserted ship on land where Milo's gang ambush the dynamic duo.
Approaching the master criminal's castle-fortress, Batman and Robin are greeted with a giant, robot crossbow. The caped crusaders trick the device into firing on the castle doors, allowing them entry. Desperate to avoid capture, Milo orders his associate, Bert, to shoot the heroes. Bert is fooled by Batman wearing a suit of armor while Robin sneaks up on the sniper and knocks him out. George Milo is then captured in very short order.
Appearing in "The Island of 1,000 Traps"
Featured Characters:
Antagonists:
- George Milo (Single appearance)
- Bert (Single appearance)
Locations:
- George Milo's island
- Milo's castle-fortress
Items:
Vehicles:
Synopsis for "Bat-Girl!"
Batman, Robin, and Batwoman battle the Cobra Gang at a scientific equipment exhibit and are captured by a member of the gang using the Electronic-Ring device. Suddenly, a new heroine calling herself Bat-Girl enters through a window and switches off the device, allowing the heroes to capture the gang, and leaves as swiftly as she entered.
When Batwoman returns to her lair, she finds Bat-Girl waiting and aware of her secret identity. A few days before, Betty Kane visits her aunt, Kathy Kane. Suspicious of her aunt's whereabouts as she goes out most every night, Betty deduces that her aunt is actually the crimefighting Batwoman. Although Batwoman is impressed and flattered, she begs her niece not to become Bat-Girl again. Batwoman later seeks the advice of Batman and Robin, who tell her to stall the girl with training in hopes that she'll give up.
Tired of being stalled, Betty finds a shoe left behind by a member of the Cobra Gang in Batwoman's crimefighting sanctuary and analyzes it. Her analysis reveals the presence of cellulose acetate leading her to the Cobra Gang's hideout in an abandoned rayon plant. The Cobra Gang captures the young heroine and imprisons her in an unused office. Bat-Girl uses the carbon paper in the office to make a number of bat shapes and releases them into an exhaust vent. Picking up on the signal, Batman, Robin, and Batwoman storm the plant and free Bat-Girl, who helps capture the Cobra Gang.
Appearing in "Bat-Girl!"
Featured Characters:
Supporting Characters:
Antagonists:
- King Cobra and the Cobra Gang (Single appearance)
Locations:
- Gotham City
- GCPD Headquarters
- Batwoman's Lair
Items:
- Bat-Girl's Crime Compact
- Batrope
- Bat-Signal
Notes
- "Bat-Girl!" was reprinted in Batman Annual #7, Batman: From the 30's to the 70's and Batgirl: A Celebration of 50 Years.
- Batman and Robin were last seen in World's Finest #116. After the third story in this issue, Batman next appears in Justice League of America #4. Robin appears next in Detective Comics #290.
- Commissioner Gordon was last seen in World's Finest #116. He appears next in Detective Comics #291.
- The Blue Bowman is actually Signalman, who was last seen in Batman #124. He appears next in Detective Comics #466. Signalman never uses the identity of the Blue Bowman again.
- Batwoman was last seen in Detective Comics #286. She next appears in World's Finest #117.
- This issue is the first appearance of Bat-Girl (Betty Kane), not to be confused with Batgirl (Barbara Gordon). She next appears in Batman #141.
- The flashback with Bulls-Eye in "The Blue Bowman" establishes that Bulls-Eye existed on Earth-One. The Golden Age Green Arrow of Earth-Two last encountered Bulls-Eye in Adventure Comics #131.