Anecdote

1) The story of the cow Bahula is taken from the Padma Purana and is also mentioned in the Mathura Mahatmya by Srila Rupa Goswami.
2) The story of Krishna growing pearls is taken from the Mukta Charita by Srila Raghunatha Dasa Goswami.
3) The story of Krishna building a bridge is referred to in the Bhagavatam (10.11.59) and more elaborately described by Srila Narayana Bhatta Goswami in Vraja Bhakti Vilasa. Srila Narayana Bhatta Goswami was a contemporary of Srila Vishwanatha Chakravarthi Thakura and lived in Radha Kunda. He is credited to have revealed the glories of various locations connected to Krishna’s pastimes in Vraja Mandala, including Barsana. 

It is interesting to note the verse of Srimad Bhagavatam (10.11.59): 
evam viharaih kaumaraih
kaumaram jahatur vraje
nilayanaih setu-bandhair
markatotplavanadibhih 
“In this way Krishna and Balarama passed Their childhood age in Vrajabhümi by engaging in activities of childish play, such as playing hide-and-seek, constructing a make-believe bridge on the ocean, and jumping here and there like monkeys.” 
 
This verse is the last verse in the chapter that describes the pastime of Krishna killing the demon Bakasura. The verse talks about setu-bandhiah (constructing a make-believe bridge) and markata-utplavana (jumping about like monkeys). This has been elaborated by Srila Naryana Bhatta Goswami about Krishna building the bridge like Sri Rama built to cross over to Lanka with the help of monkeys. 

• Baby Krishna looking at His own reflection in the butter store is an anecdote taken from Ananda Vrindavana Champu by Kavi Karnapura.
• Krishna and Madhmangala disguising themselves as brahmana boys to conduct the Surya puja for the gopis is taken from Sri Govinda Lilamrta by Srila Krsnadasa Kaviraja Goswami.
• Srila Vishwanatha Chakravarthi Thakura describes in Sarartha Darshini that the forest fire in Munjatavi was actually caused by a fire demon who was a friend of Pralambhasura. Accordingly we have represented the fire demon.
• When Krishna was swallowed by Bakasura, the various demigods like Brahma, Shiva and others attack Bakasura, and this is described in the Garga Samhita.
• The pastime of Krishna disguising Himself as the son of Prabhavati is also described in the Garga Samhita.
• Krishna asking the gopis to pay tax is taken from Danakeli Kaumidi by Srila Rupa Goswami.
• The peacocks dancing around Krishna and then gifting Him with a peacock feather is described by Srila Vishwanatha Chakravarti Thakura in the Sarartha Darshini.
• The anecdote of Indra visiting the orchard of Kamsa at Talavana is taken from the Padma Purana, as described in Krishna-avatara Vol. 1, by a renowned Sri Vaishnava scholar, Sri Narayanachar.
• Krishna asking Radha as to who gave her permission to pluck the flowers in Kusumavana and playing a trick on her when she gets lifted off the ground by a branch of a tree – this pastime in Kusumasarovara is described by Srila Narayana Bhatta Goswami in Vraja Bhakti Vilasa.
• Aristasura attacking the village residents and breaking the embankment of a reservoir is described in Srimad Bhagavatam (10.36.2). Krishna clapped his hands that greatly angered Aristasura is also described in Srimad Bhagavatam(10.36.8).
• The pastime of the appearance of Radha Kunda and Shyama Kunda is described by Srila Vishvanatha Chakravarthi Thakura in Sarartha Darshini. He also mentions that this pastime is described in other Puranas.
• “Krishna grabbed Dhenukasura with both hand, whirled him around and threw him onto Govardhan Hill.” This is described in Garga Samhita. Similarly such action items and fight sequences have all been taken from different sources.